I. PTOLEMY'S GEOGRAPHY OF ALBION. BY PROFESSOR FLINDERS PETRIE, F.R.S., F.B.A., HON. F.S.A. SCOT. Many studies have been made of Ptolemy's Geography on the ground of takin s whola t gi e statement, mor r leso e s erroneou incompred an s - hensible 188n I .6 I trie shoo dt w differena t treatmen systematiy b , it f o t c analysis int s originaoit l elements e cas th f Egyp o e n i , t (Naukratis I., pp. 90-94) Britais A . remarkabls ni Ptolemy'n ei samoun e worth r kfo f to distortion, this treatment by analysis is much needed, in order to under- stand how his errors arose, and from what material he was building. This study doe e originat toucth sno n ho l authors from whom Ptolemy drew his material e origina t onlth bu ,n yo l facts which were utilised, whether combine s predecessorshi f o Ptolemy db y an r yo . When, thereforee th , nam f Ptolemeo uses yi d here withous i t i , prejudicy tan questio e th o et n of whethe borrowee rh basis dhi c fact r adopteso wore dth k already done by others. The first ste studyinn pi g Ptolem tako t s eyi accoun varioue th f o t s readings of the MSS. For this purpose the edition of C. Miiller (Paris, 1888), with all the MS. variations, is indispensable. But the utility of this apparatus must not necessarily give authority to the form of the text adopte Miillery db s industrHi . y havma ye exceede s judgmendhi n i t formin standara g d textgivee H . s great weigh three th eo t Florentine MSS. tese ; f harmonioubutth o t y b , s positions meano n y , f thesb so e ear ruling authority appendin a n I statee . xar d seven test cases where eth geographical position checks the readings; in these the older text of Nobbe is always preferable to that of Miiller. For purposes of study the most convenient map is Kiepert's Insulce Britannicce, same th f e o siz t degreef eo ne a 1893n sO .Ptolemy' s positions wer l plottedstripn al eo f paped so e Antoninean ; th r Itineraries were laid off to the same scale. Thus (a) the true positions in Kier>ert, (6) PTOLEMY'S GEOGRAPH F ALBIONYO . 13 Ptolemy' se Antonin positionsth ) (c d e an ,comparee distancesb l al n dca , graphicall immediatelyd yan relianco N . bees eha n placeKiepere th n do t identifications of places, unless well known otherwise. Roman miles only usee ar thin di s paper Latie Th n. nameforme th f so s have been preferred, as probably they were reporte Romay b d n source n thii s s shapd an e translated into Greek by Ptolemy. The variations of the forms of names are not dealt with here. ABSOLUTE POSITIONS. The first question is the astronomical basis for the principal points. Longitudes there were none, except by dead reckoning and mapping. Latitudes were fixed—at least in Britain—solely by the hours in the longest day. For converting the number of hours into the corresponding latitude Ptolemy gives a table (lib. i. cap. xxiii.). To compare this with the truth, we have here a diagram, showing the relation of hours to the latitudes betwee d 66°e curvean th ; ° e fron48 ar s m calculationx si f o s points, for the theoretical number of hours of the sun's centre above the horizon regardles f atmosphereo s e extrem th als d r ,an ofo e appearance sun'e oth f s edg raises ea refractiony db r thie obliquitFo th s. e th f yo eclipti s beee firsth cha tnr 41 ° centurytakefo ' 23 t na , refractio t 30'a n , and semidiameter at 15'. The points tabulated by Ptolemy are connected brokea y b n fors line Hi f curvm.o vers ei y accurate t give,bu s about 10' too low a latitude for the theory of centres. When refraction and the sun's diamete takeare r n into account actuathe , l visible sunshine willbe much longer at any place than Ptolemy allowed, and his latitudes of place e correspondinglar s higho yto . In lib. viii. cap. ii. Ptolemy gives the hours of the longest day for six position regionr ou n si .

- Ptolemy-. - Actually. Error.

h m h m ° • ' m ° Uectis 16 40 = 52 16 33 = 50 40 7 H + London 17 54 16 42 51 30 8 21 J+ York . 17 50 57| 17 10 54 + 40 3J Caturactonium 18 4 2 4 55 8 8 1 7 1 2 34 J+ Alata . 0 593 J8 1 5 2 7 5 4 8 1 + 26 2 Dumna 19 10 61i 18 22 58J 8 24 f +

The actual showlengty da f sho tha observatione th t s werr efo ver d yba this purpose, only Uectis being tolerable othere th d s an ,evidentl y includ- ing a good deal of twilight. Thus the latitudes were all in excess, first by the length of day being overstated, second by the refraction raising 14 PROCEEDINGS OF THE SOCIETY, DECEMBER 10, 1917.

16 HOURS 21 22

< B

61

59

50

Fig. 1. Curves of Length of Longest Day at different latitudes. A-A Sun'y B , s centre without refraction; B-B, actual visibilit f Sun'yo s edge; P-P, state Ptolemy db y (broken line). PTOLEMY'S GEOGRAPH F ALBIONYO . 15

the apparent sun, third by reckoning the centre and not the edge of the sun. source maie th th begie nf w e p o se distortio no o n ma t W n e eca th f no of Albion. The direct distance as plotted from London to Caturactonium is equal to that from C. to Alata Castra (Nairn), and it is very likely therefore that Ptolemy had a statement that Caturactonium was half way betwee distane nth t points, such being nea trute th r h (distances sa 8:9). Havin unfortunaty b g placey eda e errore dlengtth th f n i so h Caturactoniu r nortfa f Londono ho to ° m 1 Alat d an , a Castra littl1£o °to e north of Caturactonium, he had to fit one length into 4° in England, and an equal length into only 1£° in Scotland. The only possible way to reconcile this was to turn the northern length either to east or west to fit int i t 1|e f latitude°oo th . Thu greae sth t distortio definitele b n nca y e mistakn dowth ru o t nYorkshirf n reckonin i eo y da e includo et gth e twenty minutes more twilight than was reckoned in London or Nairn.

Coasting Distances. The best materials that were available for relative positions were the coasting distances mighe W . t think that such wer r inferioefa valun i r e to road distances; but the road material was so scanty that the coasting was superior in value. It is certain that Ptolemy had none of the Antonine Itineraries had , for-idha e thosh f coule eh t possibl dno y have mad internae eth l errors tha seee smalA w t. l numbe f roao r d lengths were used, but not any one whole iter. He also ignores Hadrian's Wall. The first coastine pointh n i t thas g i placee tth s alon ggivea n piecf eo t equaa coas e lar t distances. Remembering that Ptolemy usually only state nearese sth t neve10'd ,an r less tha ndistancey 5',an s agreeing within such limit e consideree tob ar s d equal. This equal spacing probably results from statements of day's sailing between ports. The distances stated in this paper are all in Roman miles, in order to be comparable with the itineraries. PTOLEMY. ACTUAL. Cantium Promontorium. South Foreland. 5Novuo 9t s Portus. 33 to Bye or 58 to Pevensey. 49 , Trisantonis fl. 55 ,, Shoreham ,, 68 ,, Portsmouth. 62 , Magnus Portus. 48 ,, Clausentum,, 43 ,, Poole. 6 , 6Alaunu . sfl 68 ,, Weymouth „ 67 „ Axe. (37), Isaca. , Exe, 7 1 . , , e Ex o t 7 5 5r 0o 65 , Tamarus. 60 to Tamar. 178 (3 x 59) to Ocriuum. 69 ,, Lizard. (80) to Bolerium. 29 „ Land's End. 122 (2 x 61) to Herculis pr. 98 „ Hartland. 6419x Sabrian)o 3 t ( a ost. 138 ,, Gloiicester. 16 PROCEEDING E SOCIETYTH F O S , DECEMBE , 191710 R . Here, of ten distances round the South Coast, only two are not close mile0 multipla 6 r o se o sailint th f s durinthat o es gwa A . g summer, in long days, that might well be 18 hours' sail at 3 statute miles an hour. The actual distances, on either of the alternatives, are much less regular. As the eight distances stand in Ptolemy the average is 60, mean difference f Ptolemi r 4o ; y kne f Beachwo y Hea d allowean d r roundinfo d , it g sevee th n other distances averag mea, e62 n differenc actuae Th . l 2 edis - tancee besth tf so part Exee , th eas ,f havo t emeaa n differencr o 4 1 f o e 12 miles. Hence Ptolem s herywa e following scala f equaeo l distances, probably the fullest day's sailing, with two known exceptions. As to the modern equivalents, the Cantium Pr. must be the South Foreland, as Rutupias (Richborough) was 10 miles nearer London. Of the alternative name's the difficulties of distances are equal; but in favour of the first column there was a station of the Second Legion 10 miles from Alaunus, and the station of Dorchester is 7 miles from Weymouth, which would thus be Alaunus. Then Dunium would be on the height of Purbeck. The relation of Isca to the Isaca is dealt with among the inland places. The position of Cenion indicates the Fowey e headlanth t a , f whice Cannido th s hi s rock. e EasOnth t reckones Coaswa t i t equan da lmiles 4 distanc4 o t ) 0 e(4 from the Thames estuary to London, to Idumanius, and to Camulodunum. Taking the estuary as at Southend, this would agree .to about 38 miles to London, Maldon, and Colchester. There was no coasting known' from Colchester to the Wash,, and that distance was taken at only a third of the true length. Nor are there equal distances up the rest of the East Coast. Round the Welsh coast there is a shorter spacing. PTOLEMY. ACTUAL. Sabrina. Gloucester. 36 to Rhatostathubius. 58 to Cardiff. 40 Tubius. 77 Towy. 50 Octapitarum. 59 St David's Head. 50 Tuerobis. 38 Teify. 40 Stuccia. 38 Ystwyth. 42 Ganganorum. 63 Bracli-y-pwll. 38 Toesobis. 36 Caernarvon. 76 (2 x 38) to Seteia. I 51 the Dee. Thus Ptolemy's distances' average 42 miles, with mean difference "4; whil actuae eth l averag mea, 49 nf eo differenc e 15, shows that Ptolemy followed an arbitrary unit of 42 miles for his spacing, as it is much more regular. Belisama, the Mersey, may be represented by Wallasey on the PTOLEMY'S GEOGRAPHY OF ALBION. 17 corner of the Mersey estuary. Toesobis must be the river Sebint or Seiont at Caernarvon, and may perhaps be Ty-sebint, the "dwelling Sebint.e onth " Another region of equal distances is around Scotland, from Longus fl. Tuaesio t s estuary.. PTOLEMY. ACTUAL. Longusfl. Loch Linnhe. 112 (2 x 56) to Itis fl. 80 to Loch Alsh. 112(2x56) „ Navaiusfl. 82 Loch Inver. 54 to Taruidum. 42 Cape Wrath. 54 ,, Ueruuium. 80 Duncansby Head. 58 „ High bank. 65 Lothbeg Point. 62 ,, tiara or Loxa. 40 Cromarty Firth (mouth), 52 ,. Tuaesis. 43 Speye th . These distances in Ptolemy average 56 miles with a mean difference of 2. Allowing that he erred in reckoning Cape Wrath to Duncansby day'e Heaon ss da sai l instea f two do e actuath , l averag mea, 43 ns i e differenc miles5 e . It seems, then, tha e day'th t s sailin s reckonegwa d by Ptolemy as— PTOLEMY. ACTUAL. South Coast, 62. 52 to Tama,r. Wales, 42. 49 Scotland, 56. 43 Ther s alsei opossibilitya welo s t l definedno t spacina ,bu f o , equan gi l distances. PTOLEMY. ACTUAL. Metaris. The Wash. 8Ocellu1o t . mpr 70 (?) to Spurn Head, 76 ,, Dunium sin. 125 (2x62) J abouaboutt Wbitby. 78 „ Uedrafl. Wear. But the uncertainty as to where the Wash was reckoned, and the lack ocleaa f r poin Duniumr fo t , prevent this givin gfixea d value.

INLAND DISTANCES, ENGLAND. The many impossible relations of places shown by Ptolemy indicate that we must look for traces of his method of reaching his results, if we are to understand them. There are two modes of attack: one by seeking three or more points in a straight line, which suggests a single lin f measuremento e e othe th ;takiny b r e distancegth s froma plac o evert e y other place around d seeinan , g which distance agrees with the actual ground. Of course, in this as in the coast distances, 2 VOL. LII. 8 1 PROCEEDING E SOCIETYTH F O S , DECEMBE , 1917R10 .

no distanc milen ei s namei s Ptolemyy db t fro s latitudebu ,m hi d san longitudes plotted down we can measure off the distances one or more of \vhic muse hh t have utilised for his positions.- For Daruernum he gives 53 miles from London, and it is lii in the iter, actually 58 miles. The reason for placing it so far south seems to have been tha knee th w pora thersoute s th t en hwa nea o (actuall t i r y 14 miles), so he placed it 11 miles from Nouus'Portus. London to Rutupiae is 77 miles, and to Richborough is actually 71. Uenta Belgaru m places froi 9 6 m t d a Londone iter th s Ixvi , n i d i an , actually 72 miles. Uenta to Aquae Calidae is placed at 62 miles, actually 60 or 65 by different lines. Aquae Calidae to Ischalis (Ilchester) is 30 by Ptolemy, and actually so. Ischalis to the Uexalla (Axe) is 30 by Ptolemy, 29 actually. The position of Uxella must have been on the Taw near Chulmleigh, wher n anciena e t road line crosses between Dulverto Hallwalld an n . From this the distances are:— PTOLEMY. ACTUAL. To Uexalla, 73 69 to Axe. , , Tamare d 6 3 an , 35 ,, Launceston. , , Tamari„ s fl.3 5 , 49 „ Plymouth. This close agreemen o thret t e point n differeni s t directions seems thix fi s o plact eshoo t well d w an ,tha t these were known road lines. Tamare is 30 from the Tamaris estuary, and Launceston is 28 to 30 by different roads from Plymouth. Uolib s placeafroi 4 1 m t d a Tamare, furthe fro2 r1 m inlandt a d an ; Launceston is Holla-combe, which may retain the name. The place of Isca is uncertain. Most MSS. say long. 17°, which would agree to its Isace beinth n ag o rive r running north latitude Th . e varies fro 30° m'52 to 50', and 52° 35' seems to have most weight. This would give 81 miles from Aquae Calidae, against 76 actual distance to Exeter. The fusion of Isca and Legio II. in many MSS. is probably due to identity in latitude in the successive entries. That Isca was at Exeter is proved by the distance from Durnovaria in iter xv. Ther mucs ei h variatio thn ni e latitude state r Noeomagusdfo t Bu . in the text (lib. i, cap. xv.) it is given as 59 miles from Londinium, and it was the city of the Regni. This agrees with Chichester, which is 61 miles from London e latitudTh . e require d 15'° an ,r 53 thi fo ds i s MSS. vary as 53° 0', 10, 20', and 25'. soute th hn I midlands, Londo Ptolemyn Caleuo i n t 7 4 s ai e , xlith n vi iter actuall8 ,4 Silchesteryo t . PTOLEMY'S GEOGRAPHY OF ALBION. 19 Caleua to Corinium is 44 in Ptolemy, and 50 actually to Cirencester. Uenta to Corinium is 60 in Ptolemy, and 60 actually; this was then probably the main fixing distance. Deuan s placeai mosy b d te positio MSSth n o f .Uennonae o n , High Cross, and that was so very important a centre of main roads that it is likel namede b muse o yt W .t accept that positio Uennonaer nfo , although s beeha n t i confused with Deva-Chester. Thi s discussei s d furthet a r e endth . Corinium to Deuana-Uennonae is 67 (Pt.) and 66 actually. London to Uennonae is 100 (Pt.), xci in the iter, 93 actually. Sabriana = Gleuum to Uennonae is 64 (Pt.) and 67 actually. All these distances are so close to the truth that evidently Ptolemy used them in fixing the positions. A tempting emendation, followed by Miiller, is to emend Urolanium London-Uennonae th 30° n soute o ' 54 th t o ht a ° 1 s a e road, wher t emighi t be identified with Uerolanium s Urolaniut a AlbansS ,t Bu . m with Salinae is in the Catyeuchlani, and both in nearly the same latitude, 55 °40' d 30t seemi ,an ' s impossibl r brino southwardet fa t gi t shouli ; d be about Bourn, by the distances from Lindum and Uennonae, and thus be independent of Verulam. Walen I s ther e threear e straight line distancee f placeso th s d an , s on these are— PTOLEMY. ACTUAL. Sabriana to Bullaeum, 54. 55 Glouceste Glasburyo rt . Bullaeum ,, Stuccia, 52. 57 Glasbur , , Ystwithy . Stucci , , Uiroconiuma . 63 , 71 Ystwith „ Wroxeter.

Maridunu ms obviousli e Tubius mileth 2 1 n yt o s a , fro e mouthmth , and Caer-marthe e river mileth 1 d evidentl 1 p an ,t u sa s i ny retains the name. The Midlands are in a confused state, as, owing to having placed York a degree too far north of London, there is a dearth of material to occupy suc a spaceh . Firsto Metarist s a , , whic s somi h e Wash th par f o t. Norfolk was formerly much more insulated, and the Wash extended up e isl f Elyth e o distanc o Th t . e from Idumanius r Sidumaiiiuso , e th , Blackwater river, to Metaris is 53 miles in Ptolemy, and from Lindum to Metaris is 78 miles. From the BlackwTater at Maldon to Thetford, south of Ely, is 58 miles, and. from Lincoln to Thetford is 85 miles. These neao s Ptolemy' o t e r ar s distances that they were probabl linee yth n o s which Ptolemy's positions were based. Another line of connection is, Lindum to Mediolanum 108 miles, and actually 109 to Whitchurch. Lincol alsy onma possibl cross-fixee yb e distancth y b d e from Deuana- Uennonae, which is 52 miles in Ptolemy, against 65 miles actually. What, 20 PROCEEDINGS OF THE SOCIETY, DECEMBER 10, 1917. then, is to be made of Petuaria? There is no proof of connection with e Hurribere th distanceth d an , s from Metari miles6 7 s , and" Eboracum 59 miles, agree closely with the direct distance from Thetford 77 miles o Lincolnt d thencan , mile1 6 e o Yorke t distancess Th . , therefore, suggest that Petuari synonya s ai f Lindummo favoun I r clos. o ,it r o et of this duplication by Ptolemy, Petuaria is the city of the Parisi, and districParia s swa t round Horncastle eas f Lincolno t , from which came Matthe f Pariswo . Possibly Potter Hanworth mile6 , s S.E f Lincolno . , may be an echo of the name Petuaria. Beyond York, Ptolemy gives— Eboracum. York Leeds.a vi 4 Olicana1o t . 40 to Ilkley via Ripley. 7, , 0Uinnouioii . 6, Binchester, 5 . He evidently had this route before him, though he did not know that t doublei d bacshara t ka p angle t supposebu , n ra t straightdi o s d an , Uinnouion out to the west coast instead of being near the east. From this misplacement of Uinnouion and the wrong distance of York from London, it is clear that Ptolemy had not the Antonine iters before him. The distances north of York are— BY PTOLEMY. ITBB. ACTUAL. Eboracum. York.' 24 to Isurium. xvn 17 to Boroughbridge. 26 ,, Caturactonium. xxiv 25 ,, Catterick. 38 „ Uedra. 3 , 5Chester-le-Stree, Wearn to . These distances show tha excese th t f latitudeso betwee observee nth d points at York and Catterick was thrown on to the York-Boroughbridge distance by Ptolemy. furthee Th r distance from Uedr Bremeniuo t a Ptolemymonls n i i 0 y4 , mile2 5 t s actuallybu . Alon coaste gth — BY PTOLEMY. ACTUALLY. Uedra. Wear^to-Alne). Alaunuso t 0 6 . . 71 to Tweed. 3, 8Boderia, . 40 ,, North Berwick. Thes quite ear e near enoug approximationr hfo coastiny sb g distances, t Alaunu t seepu Tweede Alnebu e th mo t th t a st . a , arit Thidno s com- plicates the Bremenium distance of 35 miles to Alaunus; from Rochester Tweee th mileso 1 t d4 Alnmouto t d . an 1 Probabl3 s hi e latteyth s rwa intended, and was the mode of fixing Bremenium. The width across Northumberlan wels dwa l known fros a ,Uedre mth a Proc. Soc. Ant. Scot.] [To face page 20.

Fig. 2. Towns and Coast Names in England fixed by Ptolemy. The natural coast is here adjusted to these points. PTOLEMY'S GEOGRAPH1 2 F ALBIONYO . to the Ituna is 69 miles, and actually from the Wear to Carlisle is 73 miles. E LOAVLANDSTH . The most distorted and difficult part of the geography is that of the Lowlands e neeW d.e distance firsth o pict t t ou k s whic e fairlar h y correct, as they are probably the basis on which the map was built. After that it is time to seek for the cause of error in the other parts. First there is an obvious straight line running through Abrauannus fl., Retigonium, Uanduara, Clota, Alauna, Uictoria, Horrea, and probably o Tauao t nformee Th . r par s exaggeratedi t t frobu ,m Clota onward it is fairly correct. Clota. Cumbrae, Clydemouth. 32 to Alauna. 32 to Glasgow (lowest bridge). 3, 8, Uictoria . 38 b. „y E StirlinForth)d an . g.(N 2, 5Horrea, . 2, 0Auchterarder, . 41 „ Taua. 4, 1, Taymoutli . As there terminiintermediatquestioo o th n tw s eo i t e s th ,na e places acceptee b y ma d thus s AlaunA . d Clotan a a migh knowe e b tb o t n opposite Boderia—the Clyde opposite to the Forth—this -would suffice to lay out the line from Taua. Glasgow must have been an important lowese th s i tpoint t i plac s a ,e that coul e bridge e b Clyded th r n do o , firse th t narrow ferry. Hencstationa likelt s e exactli i b t d ei o yt ,an y agrees wit e distancehth f Alaunao s . Now, on looking at the Lowlands, Alauna is seen to be the centre of road lines, straight through (1) Bremenium to Uedra, (2) Curia to Ituna, (3) Coria to Uxellum, (4) a branch from Coria by Lindum to Nouius fro) (5 ,m Coria through Cord d Carbantoriguan a mo Deuat ) (6 , from Alauna to Clota, Uanduara, Retigonium, and Abrauannus. This net of branching roads is evidently the basis of the plan. Takin distancee gth s along these lines—

PTOLEMYY B . ACTUALLY. Ratio. A launa is Grlasgotvis 1 to 170 to Ituna. 9Edeno 4t , 1-82 als0 oNonius17 . also 79 to Nith. 2-15 186 Deua. 94 Dee. 1-98 169 lena. Wigtown. 1-90 180 Abrauannus. 92 Glenluce. 1-92 190 Nouantum. 93 Port Patrick. 2-05 It seems that all these distances have been doubled, the mean of the ratios bein variatione gth T97d an , s what migh expectee b t rouga n di h 22 PROCEEDING E SOCIETYTH F SO , DECEMBE , 1917R10 . country with devious tracks. The actual distances are those measured along river lines and present roads, in the most likely course. Why all these distances are doubled we can hardly guess. It might be due to having exaggerated coasting distances, but if so there cannot have been any road lengths known. It might more likely be due to a local habi f countino t e milth ethousana n i g d single paces, insteaf do double recordino pacess d an , haln gi f miles instea f wholdo e miles. The strange projection of Nouantum from between the two bays shows that different materials were here bayusede estuaried Th an s. s e whaar t almost entirely attrac e coastinth t g record werd an ,e prob- ably fixed thus between Abrauannu d Clotae positioan sTh . f o n e doubleth f o de distanceon Nouantuo t e sdu fros mi m Alatinad an , henc r beyonefa e baysdth . alons i possiblt e I gth e line f roaso d from Glasgo coase th wo tt that search 'should be made, at the right distances, for the various inland towns. At a first view we may expect Curia at Courance, south of Moffat, which is the exact distance; Trimontiiim, west of the Annan, possibly the coast hills at Cummertrees; Uxellum at Caerlaverock.; Coria between Strathavo d Muirkirkan n ; Lindum about Dalpedder, below .Leadhills; Cord mile4 a s nort r north-easo h f Carsphairno t ; Carban- torigum near New Galloway; Lucopibia about Dromore east of Newton Stewart; Uanduara would be 17 miles from Alauna, and Doura is 20 miles from Glasgow, near Kilwinning. Thes e obviouth e n positiono sl al e ar s lines of road, and should be searched before looking elsewhere.

HIGHLANDSE TH . The only internal places in the Highlands are on one straight line from Clota to Tuaesis estuary (the Spey). This line can be fairly traced e th s possiblea t bs holdina r yit e e Spevalle fa d th th s an y,f a o gt yo south end holding to Loch Lomond, to avoid the bending further to the west. Thus we can follow it clearly as— Ttmesis est. Spey, . Gley B n Truim— 82 to Tameia. 83 to Little Dalwhinnie. Lochy B . Lydoch— 39 „ Baiiatia. 39 to Orcliy Bridge. By Loch Lomond, Oardross, Shaw's Water— 70 „ Clota, 68 to Polteath at mouth of Firth of Clyde. Of course, ther s nothinei g fixee termini th f theso dt e interbu eth ; - mediate points are only stated to show whereabout they must fall on PTOLEMY'S GEOGRAPHY OF ALBION. such a line. The alternative road by Port William and Inveraray would excellene th longe o bwould eto us an t , t droano d of Loch Lomond. From the close agreement of the total distance above, it seems certain that Ptolemy had a good statement to go by along this road. Regardin placee gth s alon e Easgth t Coast ther generaa s ei l agree- men scaleof t mucbut , h minor variation.

Boderia. Forth. 51 to Tina fl. Edeno t 5 6 3.o 5t 40 Taua est. 10 Tay. 40 Deu. afl 60 Dee. 60 Taezalorum pr. 47 Kiniiaird Head. 29 Celnius fl. 34 Cullen. 20 Tuaesis est. 12 Spey. 30 Alata Castra. 35 Nairn. 26 TJara est. 30 Diiigwall. 44 Loxa fl. 54 Bvlex Water. 19 High Bank. 24 Lothbeg Point. 38 Ilafl. 40 Wick Bay. 20 Ueruvium pr. 19 Duncaiisby Head. Of these distancey not e following:—Froma th e e w s e Fortmth t a h North Berwick across to the Eden may vary between 35 and 65 miles accordin o extent g f ope o ta crossed se ne Ede Th f Carlislno . e th s ei Ituna, and so the Eden of Cupar would compare with the Tina. The distance of 40 miles from the Eden to the Tay may be due to being reported up to Perth; between the estuary mouths it is only 10 miles. The Dee is placed about 15 miles too near the Tay, perhaps due to their being state whola t da e degree apart. Deuan positios it y ab evidentls ni y on the Don. Alata Castra, if in this series of positions, must fall at Nairn, though as a strategic point it would be expected to be at Inver- ness. Uara (some MSS. hav ee connecteb Uarar y ma ) d with Glen Gowri Locd ean h Gorran, whic n inte headhru oth f Cromart,o y Firth near Dingwall; this name might have extended e Firthdowth o t .n Loxa seems connected with Evlex Water, which runs into Dornoch Firth ox^e 7?Th ty^^i. doe t implsno yheadlana mountainr do higa t hbu , bank of earth, such as a ridge or high sea-wall which cut off the view inland from a ship. By the distance this would come about Lothbeg Point. The Cantire coas greaa s i t t difficulty s thera , rooo en seemme b o t s n Ptolemyi fot i r . o materian Certainl d o ha construct l e h y y an t approximation to the complex of promontories and firths between the Clyde mout Locd han h Linnhe. Lemannoniu nams it y esb would belong to the River Leven and Loch Lomond; but no connection by distances seems possible t shouli s a , betweee db n Banati Clota d readine aan Th . g 24 PROCEEDINGS OF THE SOCIETY, DECEMBER 10, 1917,

varies as Lelaannonius; as this might be a MS. corruption of Leggan- nonius t woul,i d connect with Laggo e moutth t na f Loch o h Fyne, which is evidently the inlet in question. o islandThtw e f Toliapio s d Couhuan s s betweee nth Kend an t Continent appear to have been reckoned as at a normal day's sail from Cantiu Toliapiso t . mpr anothed an , Counuso t r understano T . d these we should refer to Clement Reid's Submerged Forests, where the map on pag show0 e4 s that these islands would hav ee ridg beeth en no betwee n the' old Thames Valley and Channel Valley. As the submergence prob- ably took place abou s lona t g befor ee afte Ptolemar re w him s ya t i , is quite likely that this ridge, which "would be about the last part to be attacke seae th ,y dmighb t have remained coupla stil s a l f islandeo n si the time of Ptolemy. We must remember that the evidence of the forest beds shows tha Channeo t n ther s durina ewa se l Neolithie gth c period, but from England across to Denmark was continuous land. Several uncertaintie se MSS. th of t ,muc whicno o hd h affece th t general view,, have not been noticed so far. The more serious of these are the following:—-In Scotland, Loxa and Uara are both uncertain in position. Beside the places of the usual text here plotted, there is con- siderable authorit r placinyfo g Lox Cromartn ai y e placFirtth f eo n hi Uara, and Uara into Inverness Firth. For Boderia there is much authorit d les 45° an 's 58 for ryfo 59°; neither place would mak ea differ - ence in the identification—it would only be a matter of how far along Firte th f Fortho fixeds site hth t ewa a MSS . t w Alaunufe pu . a y b s si 21° 20', which would agree better with the distance from the Wear to t i woule Alne t th bu de ,distanc th thro t wou e from Bremenium. Carbantorigu s mucmha h authorit 30° ' 59 t t i i werlat. r f o i yfo s ;e e Alauna-Lindum-Nouiuth wouln o e db s road. In England, Camunlodunum is uncertain in position—usually put at 18° 15', also at 18", and 18° 45'. The latitude in the usual text is 57°, e MSSth l . al appea t bu o giv45't ° r .57 e This would put t .jusi t half e roath dn o fro y m wa Olican Uinnouiumo t a t aboua , t Middlehan mi Wensleydale. Deuana is an intricate case. In the older versions down to Nobbe the place is 18° 30', 55° 0', with the Twentieth Legion. Such exactly accords with Uennonae, High Cross. The MSS. are three with 17° 10', one altered 30'd twelv° an ,17 o t e wit 30'° h18 ; latitudes, four MSS f 53°o . , fou f 55°o r , four of 55° 30', one 56° 45'. Hence there is only a single reading that will agree with Deva-Chester, and the Twentieth Legion that was stationed there, according to the iter; but the Uennonae position is given by nearly longitudese th l al , mans anda y .b y s latitudMSSit r fo .thers ea fo e erar any other. How all this came about it is impossible to say without Proc. Soc. Ant. Scot.] [To face page 24.

Fit;-. Si. Towns and Coast Xaine.s in Scotland fixed by Ptolemy. The natural coast is here adjusted to these points. PTOLEMY'S GEOGRAPH5 2 F ALBIONYO .

n exhaustiva e e relationshipstudth f yo e MSSth f .o s throughoue th t whole Geographia. hypothesin a expecy s A ma e t sw tha e originath t l reading was— Uennona . . . 18" 30' 55° 0' Deuana ... 17 10 56 45 Legi . VictrixoXX — 5 4 5 5 5 4 6 Uiroconiu1 . . m Then by confusion in a very early MS. the -ona ending was confused wit d 10e Uennon° ° 30'-anath 'an h17 18 , d Deuand o ,t an an at pu a dropped out. This must have been before dividing the. e townth y b s tribal sections e cannow s a , t suppos e Cornavi th Uennona n i e ib o t e like Deua-Chester Ratas a , Lindud ean m e Coritaniwerth n ei . Another difficult abous yi t Salinae readine Th . f Nobbego , 16°, cannot be right, as it is with Urolanium in the Catyeuchlani. The MSS. have 20° 10sixteen i ' 45n° twelvn i ' cases20 d e latitudeean ,th cases r Fo ., three are of 55° 20', six of 55° 40', nine of 55° 50'. From all these it must have been near Norfolk; and, by its link to Urolanium, probably at 20° 10', which in the MS. goes with 55° 40', so rather west of Metaris. In this pape I havr t attempteeno tako dt e into accoun othee th t r sources outside of Ptolemy. Here we only try to ascertain what Ptolemy used, and how he worked. The full study of the geography must take in many other source f informationso .

APPENDIX. The following cases serve to test the relative values of the texts adopteMulley b d Nobby db ran ) (M):e(N — agree) (N e coastin t th si Clotr wit n 40i ° e fo ' s th hg59 i a listd an , breadth across to the Forth, while 59° 20' (M) would be only about half breadthe th . Bullaeum, 16° 20' (N), lies in a straight line between Sabriana and Stuccia; but if it is 16° 50' (M), it would not be in line. Darouernum is e strengtth t n Constantinoplea singla o . f , ho M eMS y b ° 54 pu f t I a t. so t wouli , onle d b mile 4 y4 s from 40Londinium° ' 53 (N) f t i coniei , t Bu s. mile2 5 o st from London, exactl e Antoninth s ya e itinerary e actuath ; l distanc miles8 5 s ei . Noeomagus 5° ' withouput53 M ,t a sMS.y an t , solely becaus t i eis said to be 59 miles from Londinium. That distance, however, would mape e variouth Th 15n ° . o ' 53 brins o t reading gt i 20' ° 10'53°° e ,s53 ,ar 53 , 25'° 53 . d an Ischalis is taken at 16° by M (with the Florentine MS.), which would e coasth n t 40i ° listt mos'n i 16 (N) .no s a t,s i coaste t i th t n ,ye puo t ti 26 PROCEEDINGS OF THE SOCIETY, DECEMBER 10, 1917. MSS., put t betweei s n Aquae Calida Uexallad t agreei an e d an s, thus exactly wite distanceth h o Ilchestert s , a Romawhic s wa hn station by its name. Ilenta, on the Florentine authority, is put at 53° (M), close to Magnus Portus, while "Winchester is far from a port. Most MSS. give 53° 30' (as N), which is 69 miles from London, and Winchester is actually 72. trustin, M y e Florentinesb gth ° 52 t a Uolibt ,pu whics i a h woult i t dpu on the coast, but it is not in the coast list. The 52° 20' (N) of all other MSS. place t rightli e sTamar th n yo , inland. These test cases, where collateral facts hel o decidt p e between MSS. l shoal , w thae otheth t r readings, suc s thosa h f Nobbeo e e mostle preferrear b , e o t yth o t d version drawMiillery b p nu .