180 INDEX. 



O. 



Page. 



Oak Burls, Origin of 54 



Officers for 1909 1910 166 



Orthogenesis 13 



Osmotic theories 28 



P. 



Paleontology, American 18 



Past-Presidents 160 



Pathology, Notes on plant , 48 



Pennington, L. H., The effect of longitudinal compression upon the production of 



mechanical tissue in stems 36 



Plant roots. Interaction of 24 



Pollock, James B., Notes on plant pathology 48 



Past-President 166 



Preservation of cats for dissection 132 



President's address 1 



President of the academy 166 



Prothallia, culture of 37 



Psychology, Influence of Darwinism upon 141 



R. 



Reighard, Jacob, Past-President 166 



Rana cantabrigensis 118, 116 



fusca 118 



pipens 118 



sylvatica 116 



Rapid extension of weeds in Michigan 33 



Report of the Treasurer 16T 



Reptiles, Notes on 116 



Robison, W. E., Some recent or advanced methods in the analysis of milk 26 



Romanowsky method of staining sections 110 



Russel, I. C, Past-President 166 



Russulas of Michigan, Monograph of 55, 57 



Key to species of 62 



Index to 91 



Ruthven, Alexander G., A contribution to the theory of Orthogenesis 13 



Notes on Michigan reptiles and amphibians 110 



S. 



Sayer, Wm. S., Secretary-treasurer 116 



Scherer, Norman W., Comparative growth of water cultures in various solutions. . 93 



Screw-worm Fly "» • 114 



Scherzer, W. H., Past-President 166 



Some recent advanced methods in the analysis of milk 26 



Spalding. V. M., Past-President 166 



Spring Valley, Wisconsin, .The brown iron ores of 95 



Standardization of contact insecticides 104 



T. 



Table of Contents 5 



Thamnophis butleri 116 



Thamnophis 13 



Theory of orthogenesis 13 



Treasurer, report of 167 



U. 



Undetected cases of nasal diphtheria 112 



Unreported Michigan Fungi for 1908, with monograph of the Russulas of the state 55 



