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Proceedings of the Ohio Academy of Science 
Comparative physiology as an undergraduate study. (15 min.), 
Cuas. G. ROGERS 
Physiological evidences of animal relationship. (15 min.)..CHas. G. ROGERS 
Lorain County Roly poraceaes an (Omiait) errs nee ener ee F. O. GROVER 
AMIS tora Ot, Olakoy, (GUEIMNSIAN). s Suess oodyoeaceesoaess- E. N. TRANSEAU 
Studies on the genus Ampelopsis. (15 min., lantern)........ GRACE GILMOR 
Variations in the root system of the common everlasting Gnaphalium 
polycephalum: { (lOmin. soko snes eee ener Ewe HELEN GUHMAN 
Soil reactions and plant succession. (15 min.), 
E. Lucy BRAUN AND SYLVIA GEISLER 
Importance of resistance of the host in the control of plant diseases. 
(20 rain) ee eS 8 oe ee AS ee ey et W. J. YoUNG 
Observations on the sexual state of various plants. (15 min.), ~ 
J. H. SCHAFFNER 
The time of sex determination in plants. (12 min.)........ J. H. SCHAFFNER 
Some chemical changes accompanying growth and reproduction in 
Spirosyaa.c (Clo min). ooo late see ae oe eer eee L. H. TirFaAny 
Flora of the muck land of Delaware County, Indiana. (10 min.), 
BLANCHE McAvoy 
Notes on the distribution of sea grasses. (10 min., lantern), 
; H. H. M. BowMAn 
Prairie openings on the Little Miami River. (20 min., lantern), 
M. MILDRED IRWIN 
Concerning some ostracoderms from Ohio. (15 min., lantern), 
J. ERNEST CARMAN 
The temperature and brightness of tungsten lamps. (20 min), W. E. ForsyTHE 
Effect of tension on change of resistance and thermoelectromotive force 
by-transverse-magpnetizationih,. A. 2 5.10 Gictee ome eee ALPHEUS W. SMITH 
DEMONSTRATIONS. 
Methodstoterecordine sbirdaniorationaeeren eee aeine eee LynpDs JONES 
Drawing sof penes of dragonthessa. sener sce ae CLARENCE H. KENNEDY 
Preserved skin specimen of jumping mouse, Zapus hudsonius. .H. A. GOSSARD 
A cent found in the pharynx of a cat from the comparative anatomy 
IE efoug: 30) ina eet cei ORE Nor Pes oct Sy uta rt ena © DECI STEPHEN R. WILLIAMS 
Microscopic slides illustrating paper 13, on cestode parasites of black bass, 
RatpH V. BANGHAM 
Roots of the common everlasting Gnaphalium polycephalum; variations 
describedsin'paper 25. coo. c as ate well oevaren- tari et ee er HELEN GUHMAN 
Thorns of honey locust, Gleditsia triacanthos................ F. E. BEGHTEL 
Twigs as a basis for winter tree study; a method of mounting, 
E. Lucy Braun 
iRaintalleandiyeretationmiapsok ASiane 9c: see secre Geo. D. HUBBARD 
Drawingsmor so paliitidsSa wey eee lear. clea MaynarpD M. METCALF 
Distribution maps of opalinids and their hosts, illustrating papers 8 and 9 
and contribution to symposium on geographical distribution, 
MAYNARD M. METCALF 
