242 MICHIGAN ACADEMY OF SCIENCE. 



Other papers on Geological subjects will be oiven in the General Ses- 

 sion, Thursday evening, and in the Section of Science Teaching, Friday. 



SECTION OF SANITARY SCIENCE. 



Thursday, 3 to 6 p. m. — Vice President Prof. Charles E. Marshall, Agri- 

 cultural College. 



1. A Study of the Local Meat Supply, Rev. Caroline Bartlett Crane, 

 Kalamazoo. 



2. Dairy Inspection. Charles E, Marshall, Agricultural College, 



3. School Hygiene. Dr, Guy L. Kiefer, Detroit. 



4. Sanitary Plumbing and House Drainage. T, M, Koon, 



5. The Enforcement of Sanitary Measures in Cities and Towns. J. C. 

 Harter. 



6. Rabies. G. W. Dunphy. 



7. Mosquitoes from the Economic Standpoint. (Lantern slides.) R, 

 H, Pettit, Agricultural College, 



8. The Anthrax Toxin. J, W. Vaughan, Ann Arbor. 

 Friday, 8 to 10:.30 a. m,— 



9. The Chemistry of the Typhoid Bacillus, May Wheeler, Ann Arbor, 



10. Further Researches on the Colon Toxin, Mary F, Leach, Ann 

 Arbor, 



11. Diphtheria Toxins, L, M, Gelston, Ann Arbor. 



12. The Cultivation of Rat Trypanosomes. W. J. McNeal, Ann Arbor. 



13. Studies in Denitrification. S. F. Edwards. 



14. Morphological Consideration of Organisms Observed in Nodules of 

 Various Leguminous Plants. B. Barlow. 



SECTION OF ZOOLOGY. 



Thursday, 3 to 6 p, m, — Vice President Hubert L, Clark, Olivet, 



1. Reaction to Light of Infusoria and Rotifera. Prof. H. S. Jennings, 

 Ann Arbor. 



2. Food Habits of Hydra, (With demonstrations,) Mr, George Wag- 

 ner, Ann Arbor, 



3. Respirator}' Mechanism of Petromyzon marinus. (Lantern slides,) 

 Jean Dawson, Ann Arbor, 



4. Variation in the Earthworm, Raymond Pearl and W, N, Fuller, 

 Ann Arbor. 



5. Variation and Correlation in Arcella, Raymond Pearl and Frances 

 J, Dunbar, Ann Arbor. 



6. The Limits of Difference in Specific and Subspecific Distinctions. 

 (20 minutes,) H, L. Clark, Olivet, 



7. The Pearl Organs of the Cyprinidae, (20 minutes.) (Lantern 

 slides,) Prof, J, E, Reighard, Ann Arbor, 



8. An Experimental Study of the Spawning Behavior of the Brook 

 Lamprey, (20 minutes,) (Lantern slides,) Prof, J, E, Reighard, Ann 

 Arbor, 



9. A Preparation for Dissecting Pans. ( o minutes,) S. O, Mast, Hol- 

 land, Mich, 



Friday, 8 to 10 :30 a. m.— 



10. The Variability of the Garter Snake (Thamnophis sirtalis), (15 

 minutes,) W, L, Sperry, Olivet, 



