6 THE MICHIGAN ACADEMY OF SCIENCE. 



Page. 



Significance and Production of Walker-Gordon Milk, by Ira O. Johnson 131 



Associative Action of Bacteria in the Souring of Milk, by Charles B. Marshall (note) 135 



Problems in Terrestrial Physics, Including the Earth's Rotation, by Henry B. Baker 136 



Gun Shot Wounds and Tetanus, by T. B. Cooley 151 



Some Physical Properties of Ptyalin, by David J. Levy 155 



A Preliminary Report upon the Extraction of a Toxin from Liver Cells, by J. P. 



Munson and P. R. Spencer ". 162 



The Intracellular Toxin of Bacillus Pyocyaneus, by Donald R. Maclntyre 163 



The Effect of Putrefactive Bodies on the Chemical Tests for Morphine, by M. W. 



Clift 167 



An Actinomyces Isolated from Man, by D. J. Levy , 169 



An Improved Medium for Cultivating Trypanosoma Brucei, by Ward J. MacNeal 173 



On the Cultivation of Trypanosoma Evansi, by F. G. Novy and Ward J. MacNeal 179 



On the Filtration of Trypanosomes, by F. G. Novy and Ward J. MacNeal 180 



A New Phosphorescing Organism, by H. N. Torrey 181 



A Statistical Study of Conjugation in Paramecium, by Raymond Pearl and Mary 



J. Burr (abstract) 184 



Methods LTsed in Cultivating Pure Strains of Paramecium, by Frances J. Dunbar.. 186 



On the Variation in the Jaw of Succinea Ovalis, by Bryant Walker (abstract) 187 



Notes on the Molluscs, Reptiles and Amphibians of Ontonagon County, Michigan, . 



by A. G. Ruthven 188 



Catalogue of Michigan Fish, by Ellis L. Michael (abstract) 19S 



A Michigan Biological Survey, by H. L. Clark 194 



The Antiquity of the Zoanthid Actinians, by J. B. Duerden 195 



Phototaxis in Ranatra, by S. J. Holmes 199 



Contributions to the Botany of Michigan, No. 8, by O. A. Farwell 200 



Active members of the Michigan Academy of Science, April 1, 1904 215 



Index 217 



