TABLE OF CONTENTS. 



PAOE 



Constitution and By-laws 5 



Past Presidents 7 



Officers of the Academy, 1916 7 



Officers ofithe'Academy, 1917 8 



Membership of the Academy 9 



Minutes of the Forty-eighth Annual Meeting 16 



Minutes of the Forty-ninth Annual Meeting 23 



Address of the Retiring President, Forty-eighth Annual Meeting 31 



Address of the Retiring President, Forty-ninth Annual Meeting 33 



Observations on Jupiter at the Opposition, 1915. Edison Peltit 49 



Celestial Photography with the Washburn Telescope. Edison Peltit ... 51 

 Note on a Device for Setting a Heliostat in the Meridian. Edison Pettit . . 53 



Some Common Fallacies about Kansas Weather. S. D. Flora 55 



The Influence of the Separator Upon Distribution of Bacteria in Milk 



and Cream. L. D. Bushnell and O. W. Hunter 61 



The Microbal Flora of Graded Cream. O. W. Hunter and L. D. Bushnell, 69 



Man and Microbes. John Sundwall : 77 



Some Experiments with Bacillus coli-communis (Escherich). Frank U. 



G. Agrelius 105 



Botanical Notes. Frank U. G. Agrelius 107 



Botanical Notes, 1917. Frank U. G. Agrelius 118 



The Algse of Kansas Reservoirs. James B. McNaught 121 



Some Factors in the Winterkilling of Grain Crops. S. C. Salmon 129 



Cultivation of Medicinal Plants in the United States. L. E. Sayre .... 133 

 Isolation of Toxic Principles of Coffee, and the Determination of Their 



Toxicity. L. E. Sayre 136 



Artificial Rubber. L. E. Sayre 142 



Corn Oil and a New Point of View in Food Values. L. E. Sayre 143 



Foreign Additions to Our Dietary. E. H. S. Bailey 147 



On the Occurrence of Starch in Green Fruits. E. H. S. Bailey and W. 



S. Long 153 



The Composition of 'Commercial Fruit Extracts. Walter S. Long 157 



The Relation Between the Quantities of Tin and Hydrogen in "Spring- 

 ers." Walter S. Long 162 



The Adulteration of Jams and Jellies. Walter S. Long 168 



A Method for the Determination of Starch. Walter S. Long 172 



A Method for the Quantitative Determination of Salicylic Acid in the 



Presence of Acetyl Salicylic Acid. G. N. Watson 175 



Some Chemical Products of Physical Fatigue and Their Possible Effect on 



Mental Efficiency. F. C. Dockeray 177 



Echinacea: Its Combination and Use. J. M. McWharf 179 



Stramomium. L. D. Havenhill 181 



Analyses and Comparative Heating Values of Natural Gas and Coals. 



H. C. Allen 185 



History of Kaw Lake. ./. E. Todd 187 



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