TABLE OF CONTENTS. 



Page 



Title page i 



Letter of Transmittal iii 



Table of Contents v 



Papers published in this Report: 



1. Presidential Address — The Beginnings of Life from the View Point of a Bacteriologist, 



Chas. E. Marshall 1 



2. The Theory of Orthogenesis, Dr. Alexander Ruthven 13 



3. American Paleontology and Neo-Lamarkism, Prof. E. C. Case 18 



4. Mutual Interaction of Plant Roots, J. B. Dandeno 24 



5. Some recent Advanced Methods in the Analysis of Milk, W. E. Robison 26 



6. Osmotic Theories with especial reference to van't Hoff's Law, (Abstract) J. B. Dandeno. . 28 



7. Investigations on the Toxic Action of Bordeaux Mixture, (Continued) J. B. Dandeno . . 30 



8. The Rapid Extension of Weeds In Michigan, W. J. Beal 33 



9. The Effect of Longitudinal Compression upon the Production of Mechanical Tissues in 



Stems, (Abstract) L. H. Pennington 36 



10. The Culture of Fern Prothallia, Elizabeth D. Wuist 37 



11. The Florist ic Composition of the Vascular Flora of Mount Ktaadn, Main, LeRoy H. 



Harvey 37 



12. Notes on Plant Pathology, James B. Pollock ^ 48 



13. Unreported Michigan Fungi for 1908. with a Monograph of the Russulas of the State, 



C. H. KaufTman 55 



14. Comparative Growth of Water Cultures in Various Solutions, (Abstract) Norman W. 



Scherer 93 



15. The Brown Iron Ores of Spring Valley, Wisconsin, R. C. Allen 95 



16. Standardization of Contact Insecticides, H. C. Hamilton 104 



17. The Application of the Romanowsky Method of staining to sections, Frank A. McJunkin, 



M. D 110 



18. Undetected Cases of Nasal Diphtheria, P. M. Hickey, M. D 112 



19. The Screw-worm Fly with the Report of a case of Myiasis Narium, Alexander W. Plain, Jr. 114 



20. Notes on Michigan Reptiles and Amphibians, Alexander G. Ruthven 116 



21. The Early Development of Neuroflbrillae in Rana and Amblystoma, (Abstract) H. M. 



MacCurdy 1 1 g 



22. Note on a Double Snail, Campeloma, sp. (Abstract) H. M. MacCurdy 119 



23. The Effects of Centrifugal Force upon Embryonic Development of some Chrysomelid 



Beetles, R. W. Hegner 123 



24. The Germ Cell Determinants of Chrysomehd Beetles, R. W. Hegner 120 



25. Some Light Reactions of Gonionimus, Louis Murbach 126 



26. Preservation of Cats for Dissection, Jesse J. Myers 132 



27. Key to the Genera of Gastropoda of Michigan, H. Burrington Baker 134 



28. The Influence of Darwinism upon Psychology, N. A. Harvey 141 



Complete list of Papers and Addresses presented at the Fifteenth Annual Meeting of the Mich- 

 igan Academy of Science 146 



C3 Exchanges of the Michigan Academ.y of Science 149 



^;r Membership list, and affiliated societies 161 



y—' Officers for 1909-1910 166 



, Treasurer's Report 167 



Constitution and By-Laws 168 



Index 276 



