Proceedings of the Ohio State Academy of Scienee 17 



12 Reaction of Amphibian Embryos to Tactile Stimuli. 



10 min. G. E. CoghlU 



13 The Epibranchial Placodes of Ameiurus. 9 min. F. L. Landacre 



14 Periodicity of Spirogyra. 10 min. W. F. Copeland 



15 The Dispersal and Planting of Seeds by Nature's 



Methods. 15 min. W. R. Lazenby 



16 The Male Reproductive Organs of Cimhex americanus 



Leach. H. H. Severin and H. C. Severin 



17 A Peculiar Circulatory Modification in Necturus maclosus. 



6 min. S. R. Williams 



18 A Migration of Anosia plcvippiis in Ohio. 8 min. Herbert Osborn 



19 The Variability of Zygospores in Spirogyra quadrata 

 formed by Scalariform and by Lateral Conjugation, 



and its bearing on the Theory of Amphimixis. 10 min. L. B. Walton 



20 Some Observations concerning the effects of Freezing 



on Insect Larvae. 6 min. J. S. Hine 



Adjourn at 5:00 p. m. for a 15-minute recess. 

 5 :15 p. m. 



21 The Status of American Lichenology- Bruce Fink 



22 Stains for Embryonic Skeletons. 10 min. E. L. Rice 



23 A note on the Occurrence of Typhlopsylla octacfeiitts 



in Ohio. 5 min. Herbert Osborn 



24 The Development of the Swimming Movement in 



Amphibian Embryos. 10 min. G. E. Coghill 



25 Natural History Notes from Hamilton Co., Ohio. 



10 min. Charles Dury 



26 Some Rare and Unnamed Mushrooms found in the 



Cuyahoga Valley. [Lantern Slides.] 5 min. G. D. Smnn 



27 Report on a New Pathogenic Pirosome. 5 min. E. F. McCampbell 



28 The Marine Biological Survey of the San Diego 



[California] Region. 10 min. B. M. Davis 



29 The Development of a Kelp. 15 min. R. F. Griggs 



30 Regeneration and Inheritance. Sergius Morgulis 



31 The Gold Fish — Carassius auratus L. — and its Color. 



12 min. L. W. Sauer 



32 A New Experiment in Ionization. 10 min. F. J. Hillig 



33 The Lateral Line Organs of Ameiurus. 8 min. F. L. Landacre 



34 Annual Report on the Ohio State Herbarium 



for 1907. W. A. Kellerman and Freda Detmers 



35 Notes on Philomj^cus. 5 min. V. Sterki 



36 Observations on the Life History and Adaptation of a New 

 Semi-Aquatic Aphid, Aphis aquaticus. 8 min. C. J. Jackson 



37 Variation in Temperature and Light Intensity when growing 

 plants under cloth of different Colors. 



W. A. Kellerman and G. W. Hood 



