, 1903. MONTHLY WEA!CHER REVIEW. 227

leaving a trail like a narrow cloud for Borne length of time. the extreme hourly velocities are deduced from the records Thunder at Pepeekeo, . Snow on Mauna Loa 21st. for single miles. The table referred to by Professor McAdie Heavy surf 15-19, 23-28. will be found on page 220.-C. A. The rainfall of 1902 was extraordinary in amount in all dis- tricts, Naalehu and Hilea in Kau and Waiawa in Kauai being LANTERN SLIDES. the only exceptional stations, while at some points the rainfall Dr. 0. L. Fassig communicates the following list of lantern was more than twice the normal. slides that he haR had made for his lectures on meteorology at Figures in black type indicate that one or two months are Baltimore, Md. Duplicates of the slides marked “ n ” (nega- missing from the gear’s record, but are interpolated from ad- tives) can be furnished those who desire them at the rate of 25 jacent stations. Where three or inore months are lacking cents each; a negative and slide will cost 50 cents. If any item the station is omitted from this list. includes many slides the corresponding number is given. Mema temperatwe table for May, 1303. 1. Whirling alto-stratus. 1 11. Umbrella cloud. MONTHLYWEATHER REVIEW. 1902. 1 n. Diurnal barometric wave, North America and South America. Stations. 111. Diurnal Iiaronietric wave, path of center. 1. Solar halo, Columbus, Ohio. - ~~~~ .__ ~__ 1n. C,luster of snow crystals. 0 0 RrI. O 2. The ‘I tTJllbria ” after a snowstorm. Pe eekeo 100 76.8 68.3 71.9 p ...... 2 11. Effect of heavy snow on trees. Hi0 ...... 40 S2.3 a.5 74.7 Kohala ...... 5’21 rd.5 65.6 io. 9 111. Effect of hailstorm on corn field. 5s. 3 63. 7 1. Distant view of tornado. 55. 9 69. 0 67. 1 74.9 1 n. Fake tornado. 64. 5 74. 2 2 n. New Richnioncl tornado. 7U. 5 i5.0 1 n. Louisville turnado, March 27, 1890. 3 n. West Indian hurricane, 8 a. in., August. 7, 8, rtnd 13, 1899. 1 n. Galveston hurricane, Septeinber 8, 19W. (Isobars.) HIGH WINDS AT POINT REYES LIGHT, CAL. 1 11. Typical storm area, February 28, 1902, Y a. m. By Mr. W. W. THunas and Prof. 4. G. MCADIE. 3 n. Typical Gulf st,orm, February W,21, and %, 1902. 3 n. Typical Lake st,orm, Deceniber 24, 25, and 26, 1YW. Mr. W. W. Thomas, Observer, Point Reyes Light, Cal., 1 n. Storm tracks and storm frequency. through Prof. Alexander G. McAclie, communicates tables and 2 11. St,orni tracks. Jauuary and February, 1903, . 1 n. Daily weather map, United Statos. Typical low area in Missis- charts comparing together the wind velocities (luring two mem- sippi Valley. orable gales at the former station in May, 1902, and 1903. He 1 n. Paths of highs and lows across the United States with rate of adds: “It is believed that the record of an average hourly progress. movement of the air, exceeding 50 miles per hour, for a period In. Flat may, June 15, 1896, 8 a. in. 1 n. Normal temperatures in United States, January. of nine consecutive clays (Mag 13-23, 1903) is unparalleled in 1 11. Nvrnictl temperatures in Unit.ed States, July. the records of the Weather Bureau.” Professor MlloAdie sap: 3 n. Baltimore daily weather, 1871-1902; February 22, March 4, and “ I have added a few notes giviug the air movement at Point *July 4. Lobos, Cal., Sail Francisco, Mount Tamalpais, and Southeast 1 n. Baltimore norinal daily temperature; average masinium, mini- nium, and barometer. Farsllon, as the grouping of the stations makes it possible to 111. Baltimore temperatures; daily ranges and extremes. discuss the air movement at sea level, on the ocean, a little 1 n. Balt,imore monthly temperature departures. 1817-1902. above sea level on headlancls, and at a height of half a mile on 111. Diiirnal variation of temperature at Baltimore on clear, cloudy, and rainy dags. Tamalpais. ” 1 n. Relation between temperature and wind direction January, April, Two itleniorable irorthwest galee at Poiut Reyee Light, Cul. July, and October, at Baltimore. 1 n. Diurnal and annual changes of wind velocity at Baltimore. 1 n. Diurnal variation of temperatures at Baltimore as affected by wind - - - - velocity. 2 0 Time of 1 n. Baltimore rainfall probability; 5-day means, daily and average wax 11111 Date. -a0. *. i 1u amounts. a a. ld ;x gs a-MX velwitp. 1 n. Nornial daily temperatures at Baltimore, April 2&June 28. tD =s 1 11. Sun-spot frequency and tem1)eratures at Baltimore. 0 2 :; - Y .3 P 3 $2 1 n. Unusual succession of rainy Sundays, Baltimore, September, 1902, - - - ___- to February, 1903. 1w2. Miles. liilrs files. .lli/ri(ra 6. Fog billows, Sau Francisco, Cal. ...... 7 4 11 10 188 8 16 1G ...... 1 n. The moon and the weather. 14...... 11 14 12 22 347 14 28 30 ...... 2Y 31 31 36 756 31.5 45 50 ...... 1 n. The coronal period and meteorological and magnetic phenomena. 39 38 46 58 1,086 45 76 80 10:3n p ro. 111. Sun-spot frequency aud temperature, rainfall, hail, aud vintages. 17...... 64 54 67 78 1,5RO 66 90 96 7:w 1,. IU. 1 n. Sun-spot frequency and magnetic declination. 18 ...... 75 io 79 88 1.876 7n 110 120 8:50 1’. ~ll. 1. Marvin’s kite meteorograph. 19...... 59 45 59 64 1,360 Bi 75 80 7:oo 1’. 111. . 20...... 40 27 31 52 905 3 57 62 10:45 a. Ill. 22. Typical cloud forms. 34 12 11 22 474 20 48 50 1?:W a. UI. 111. Typical cumulus. Ham. 21 7 9 12 12 27 29 ...... 1 n. Thunderhead, Java. 17 7 10 15 291287 12 26 30 ...... 1 u. Typical cloud forms arranged in order of occurrence. (Inward.) 13 9 11 35 410 17 10:15 IJ. m. 4 n. Hail clouds. 51 39 4i 55 1,153 4s 9:w [J. 111. In. Ideal cross section of hail clouil. 15...... 43 4 63 74 1,371 57 7:55 p. 111. 16...... 7” 60 65 A2 1,673 70 9:sp. Ul. 4 11. Hail stones. 17...... 62 42 51 67 1,%39 56 1205 a. IU. 111. Hail shooting in Italy. in...... JB 52 4s 59 1.247 Y! ]?:lo a. 111. 1 n. An aurora, Germany, eighteenth century. 45 45 47 50 1,124 47 12:15 a. Io. 43 43 50 50 1,103 46 3:50 a. m. 1 n. Solar halo and mock SII~S. 47 4i 53 Ri 1,227 51 8:45 a. m. 1 n. Solar halo, seventeenth century. 22...... *2 39 39 45 986 41 11:30 a. 111. 25. Snow crystals. 23...... 47 19 18 30 679 38 1245 a. 111. 1. Snow under the equator. - - - - 1. Lightning flashes. As the diagram accompanying Mr. Thomas’s communication 1. Tree struck by lightning. is but little more instructive than the tabular data, me refrain 1 n. Approaching tornado. Frank Leslie’s Weekly. from publishing it; the proper fractions given by Mr. Thomas 1 11. Tornado, Germmy, sixteenth century. 1 11. Waterspouts, Florida coast. have been omitted as the nearest whole figure is sufticient; 1 n. Sun-spot frequency and June temperature at Rremen. the maximum hourly velocities are the averages for five minutes; 1n. Rynmann’s Wetterbuchlein. Edition of 1510, Augsburg.

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