33 



The Water Balance of Desert Plants, 15 minutes D. F. MacDougal 



Disease Resistance in Varieties of Potatoes C. R. Orton 



The Laboratory Method of Determining the Fungicidal 



Value of Spraying Mixtures, 10 minutes L. R. Hessler 



The Black Knot of Plum, 10 minutes H. L. Rees 



Additions to the Indiana Flora, 3 minutes Charles C. Deam 



An Ecological Survey of the Lower Whitewater Gorge, 15 



minutes M. S. Markle and L. C. Retry 



Report of Work on Corn Pollination II, 3 minutes M. L. Fisher 



8:00 p. m.. Address, illustrated by stereopticon, by Dr. D. T. MacDougal, 

 of the Desert Laboratory, Tucson, Arizona. 



[3—26988] 



;iiii 



