Thirty-third Annual Meeting 283 
Scientific Sessions. 
The complete scientific program of the meeting follows: 
PRESIDENTIAL ADDRESS. 
STE snore SOGIal, CVOlUtON. 632.0 oe dacs eck wes bac ceca ccveus acct A. P. WEIss 
PUBLIC LECTURE. 
Trees as witnesses in boundary disputes: an instance of applied ecology, 
Henry C. CowLes 
SYMPOSIUM ON GEOGRAPHICAL DISTRIBUTION OF PLANTS 
AND ANIMALS. 
Geological factors in animal and plant distribution.............. G. D. Hupsarp 
HOMmetachors iweplant Gistribwbions cer... <5... 5266- ese e te we ces ee H. C. CowLes 
The distribution of vegetation in relation to physiographic provinces, 
E. Lucy Braun 
The places of origin of the several families of Anura...............M.M. METCALF 
Factors which determine local distribution of spiders............ W. M. Barrows 
Some problems in the distribution of dragonflies. (Lantern), 
CLARENCE H. KENNEDY 
SYMPOSIUM ON CURRENT PROBLEMS OF OHIO GEOLOGY. 
PaniveraleoZO1e Strabetaphy.s. 4.4.5 6ss:seataseeee ss onc seen ees W. H. SHIDELER 
IMaddlesPaleozoic Stratigraphy. .2. 0... co. noc ees ee eee e cee ees J. ERNEST CARMAN 
saanieraphy of the Carboniferous formations...:.-.........0.....2.-.. J. E. Hype 
Palcozoiedamumas.and thei correlation: 22 2..--.--.22.:+:esee.euse ct A. F. FOERSTE 
Some work yet to be done in Ohio physiography............... Geo. D. HuBBARD 
“i RIGOWING GAN GTS tes Se cco nee rae J. A. BOWNOCKER 
RMR HME ECO LOOM nies ae Schr ope ale Se ngenn = vote Se ai wane eee dee W. H. BucHER 
PAPERS. 
1. Weather and human conduct. (30 min., lantern)..WILLIAmM H. ALEXANDER 
2. Some Old World botanic gardens. (25 min., lantern)........2 A. E. WALLER 
3. Some features of the Park Area of the Cleveland Metropolitan Park 
Dishnichn (20 mimi’ wlaAnteria) hs sc. li, ae soho ie, etre era E. L. FULLMER 
4, The Cleveland Museum of Natural History. (25 min.)......... P. M. REA 
5. An ‘‘eagle’’ observatory at Vermilion; results obtained in 1922. (40 min., 
LTT GET) ee op ees ee er yA ve ee ee Francis H. HERRICK 
6. A contribution to our knowledge of the life history and physiology of 
1D ered lerarers, el CG) Saat) Ae oe te ah ldo ate eee oe aria Geena ae Ae W. J. Kostir 
7. The so-called allelocatalytic effect in the reproduction of Protozoa. 
(SFT) ROSES Se oo cae eae ieee ete ational es ak ed eee W. J. Kostir 
8. The persistence of archaic parasites through many geologic periods. 
(iOhmin. “opaque: projection)=--..-. so-so see -MayNarD M. METCALF 
9. The origin of American opalinids. (15 min., opaque projection), 
MAYNARD M. METCALF 
10. Twonew cestode parasites in black bass of Ohio; life history, distribution, 
jie, GO Narvic) pistes San eS ais oe eee Ne mice tae RaLpH V. BANGHAM 
11. Life history studies of Homoptera. (10 min., lantern)...HERBERT OSBORN 
12. Jumping mouse, Zapus hudsonius, in Ohio. (10 min.)....... H. A. GossarD 
13. The geographic distribution of Arctic Bryozoa. (10 min., lantern), 
RayYMOND C. OSBURN 
14. The inheritance of the nail-biting habit. (10 min., lantern), W. M. BARRows 
15. A case of extra digits in the manus of the pig. (10 min., lantern), 
STEPHEN R. WILLIAMS 
16. On the origin of some embryonic abnormalities. (10 min.)..R. A. BUDINGTON 
