PROCEEDINGS OF THE I PENNSYLVANIA ACADEMY OF SCIENCE VOLUME V 1 9 3 1 I HARRISBURG, PENNSYLVANIA 1931 I CONTENTS PAGE Report of the Secretary, April, 1931 ....................._ ..... - ....... - ..... - .. - ......................................_ ..... -... 5 Study -of a Disease of Boxwood in the Eastern United States, by vV. G. Hutchinson .......... ... .......... ............ .... ...... ..... 13 Preliminary List of the Hepaticae of Central Pennsylvania, by Thomas M. Little 14 Preliminary Report on the Mammals of Pennsylvania, by Charles E. Mohr , ___ ..._ 17 Plants from Momoe and Pike Counties, P ennsylvania, New to the Collection of the Carnegie Museum Herbarium, by Edw. H. Graham and LeRoy K. Henry 28 Total Emissivities of Aluminum, Brass, Copper and Steel, by E. Raymond Binkley .. ·-·--·----.. ·-·-·................ - ............... - .................................... ,.. ........ ---·-··-.... - ................ 34 Leaf Spot Production Upon Tobacco by a Culture Filtrate of Fusa1·ium affine, by W. S. Beach ................ .. .................. - .... - ..... ......................... .. _ . ---· ·---... - .................. ,........................... 37 Is the Flight of the .T apanese Beetle Necessarily Restricted to a F ew Months of the Y e ar~, by George B. Stichter ........ - .... -... - .... - ..................................................... _____ ........ .,... 40 OFFICERS The Chromosomes of the Mouse, by Paul R. Cutright ............ - ................... --....................... _..... 42 Adjustment of Academy Organization to Growth, by D. S. Hartline - ........ _ .. _,....... 45 1931-32 Nocturnal Adaptations; by Stanton C. Crawford ......................................-- ........ -..................... 54 Ji'ossils and Fossilization, by Bradford Willard and Pembe1'ton L. Killeen ..... _,____ 62 President ........................................................................ E. 1\lf. RE. H~u'l'i bmg Lact ~tca saligna L. in Franklin County, Pennsylvania, by E. M. Gress ........................... 67 ice-Pntsiclent ... .. ................................... -. .. .. ........... A rum, H . wll JLI.A rs P1tt· bmgh Preliminary Report on the Results Obtained in the Cultme of H aema to coccus Sec·T: cttwy .............................................. ..... - ............... '!'. L. G "l'ON Hru.Ti burg (Sphaerella), by V. Earl Light .... - ...............- ................. ---.. -·-....................... --.. --......... 67 Samia Hybrids, by Walter R. Sweadner ...... ,._,_.... _,. __ ,.,_ ............................ _ .... _ .. _.__ ................ 71 .As.nsta.nt ec1' el cwy ................................... .......... V. EARIJ LIOR 'l' nnville Tattooing New Bom Infants for Permanent Identification, by Evan 0 'Neil '1'1·ea tw e1· H ' Ecl·ito·l' ...................................................................... · W. Tn R. TON, _tate ollege Kane __ ,...... - ...... , ... _ ..................... _ ............... - ...... _.. ..................... ,.. _ ................ - .........-- ................ -..................... 7 4 ................ .. ........... ......... .............................. ............. W. S·ro~TE, Harl'J. burg Study of the Reproductive System of the Male and Female (Oviparous) Cockle- bur Aphid, by Forrest W. Miller ...... - .. - ...- ... - .............. - ........... ........................... __........ ----··· 75· The Effects of Desiccation Upon the Growth and Development of the Mediter· ranean Flour-Moth, by Benjamin R. Speicher ........ - ........ _ ........ - ....... - ................... - ..... _ 79· The . ge of the pnwui11g Groups of th e orthel·n Log-Perch Pel'cirt tt caprodes scmifasoiata (De Kay) of D ugla Lake, Mi ldgn.u, ns Rcvenled by Their , cales, by R omer C. vVill ... _ ..... - ........................................ - ... - .. - ·----... - ................................... -............ 82 Preliminary Report on the Animal E cology of Presque Isle, Lake Erie, Pennsyl· vania, by Samuel H. Williams __ ,,_,, __, .... - ........ - ................ - ..... _ ... _, ___ ,. _____ .. _____ .... 88 Studies on the E cology and Distribution of Aquatic Beetles of Presque I sle, by John T. Gamble ........... ___.................... ,........ ..................._,_, ........................................................... -......... 97 Specific Differences in Regenerative Capacity in U1·odeles of the Genus Triturus, by H. H. Collins .........._ ............................. .... ____... .... ................. ....-- .. --·---.. --............. 100 Sex Ratios in Adult Populations of TTitunts viTidescens, by H. H. Collins ------- 101 Negative Geotl'Opism in Post-Metamorphic Young of T?·it1tms vi1·idescens, by H. H. Collins ., ... _ .. _ ............. ,............... ................ _ .. _ ___ ... _ ............. __ .... ... ......... ~ ............... _ ........ - ..... - .................... 102 Doctors of Philosophy, by Robert T. Hance _ ............. _ ............. _ ..................- ... - .. - ... - ... ---··- 103 Floating Positions of Homogeneous Square Prisms, by Joseph B. Reynolds _ ...... 106 Evidence of Durability of Building Stone, by R. W. Stone __ ,_,.,_, _____ , .......................... 112 Training Graduate Students, by Robert T. Hance .... __, .......... - ........ _ ........ _ .... _ .. _,.,.,_,.._,_ 114 The Nature of Gravitation, by R. N. Davis ____.. ..... - ................... ,....... ........................... - ................. 116: THE SciENCE PRESS PRINTING COMPANY The Effects of Feeding Prostate Substance to Tadpoles, B. H. Kettelkamp ............ 121 Lam AND GREEN STREETS ' The Effect of Ultra-Violet Radiation Upon the Color Pattern of Triturus, by E. LANCASTER, PA. ' Alfred Wolf and H. H. Collins .... 122 3 Some Chemical and Physical Effects of Forest Fires on Soil, by Geo. S. Perry _ 123 Miasma and Contaminated Water Supplies, by Michael J. Blew ................ - ................ ,_ ... 127 Where \¥ ater Is a Strong Drink, by Max Trumper _____ , .. ,_ .. _.,_,__ .,, ____ .................. - .... - ... 130 A Reading Program for General Zoology, by Paul R Cutright .................................... - ...... 132 The Effect of Adrenalin Chloride on the Maze Behavior of Mice, by W. L. Wacher _,,,_............................................ _ .. _, .................................................................. - .. - .............................. 136 PENNSYLVANIA ACADEMY OF SCIENCE The Effects of X-Rays on the Development of the Prostate Gland, by B. H. Kettelkamp ..... _ ........................ _ ......................................................................................................... _,,_.. _ .... _ .., 137 MINUTES OF THE SEVENTH ANNUAL SESSION OF Modified Xanthene Compounds in the Diagnosis of Malignant Neoplasms, by Donald C. A. Butts ,_ ........ - ..................................... - ... -... - .. - ... - ...................................................................... 139 THE PENNSYLVANIA ACADEMY OF SCIJDNCE 1931-32 HARRISBURG, PENNSYLVANIA-APRIL 3-4, 1931 The seventh annual session of the Pennsylvania Academy of Science ILLUSTRATIONS met at Harrisburg, Pennsylvania, April 3rd and 4th. The meeting was FIGURE PAGE presided over by Professor D S. Hartline, Bloomsburg, Pennsylvania. 1. Total radiation pyrometer __ .. ___ ,, ..................... _ .... .... _,.,.,_,, _____ ,,_ ................ - ........... _ .. _................ 34 The following reports were presented : 2. Curves of relative total emissivities ..... --.. --.. - ............................................................................ 35 The sixth annual meeting of the academy was held in Bloomsburg on 3. Curves of temperature by radiation pyrometer ........... - ........... -................................................. 36 April 18th and 19th, Dr. Rober t T. ance pre idiu ,._ 'l'he program 4. Infection spots on tobacco leaf .............................................................. - ..... - .... ,_ ... .,_ ..... ~................ 38 5. Reproductive organs of Cocklebur Aphid .............................. - .. - .. - .. --..... _ .. _ .. __ 77 given on these days is given in full iu th fourth volume of the ''Proceed· 6. Effects of desiccation on Ephestia kuhniella _ .......... - ... - ... - .. - ~ .. - ... - .... - ........__ .......... 81 ings" of the academy which wa: pu bli. hed in th fall of 1930. Copies 7. Scales of log-perch .... - ................. .................................. ,. ............. ,... ,.. _,., ................ ,., .. _.,_,_,...... ......................... 84 of this were distributed to the m mb 1: hip. The acadenty i. indebted 8. Male and female log-perch ,_ ......... - .............................................................................. ,........... .. .... .. ............. 86 to the committee on local arrangements for the excellent care taken in 9. Map of Presque Isle, Erie, Pa . ......................... _............. - ........ _ .. _,_,_........... - ... - .... - .... -......... 90 10. Floating position of square prism ................ - ..... - ........ - ......................................... _.,_ ................... _ .. 107 providing adequate and comfortable meeting places, and for the enter­ 11. Floating position of square prism .......... _ ........... _,_,,...... --.......... ,_ .. _ .. ,.. ____ ........................... 107 tainment given by the people of Bloosmburg. At this meeting 69 per­ 12. Curves of buoyancy in a square prism ..................................................................................................