NOTES AND COMMENT 347 



Joseph Stuart Caldwell. A Study of the Effects of Certain Antagonistic 

 Solutions upon the growth of Zea Mays. 



Hermann Bacher Deutsch. Effect of Light upon the Germination of the 

 Spores of the True Ferns. 



James Frederick Groves. Life Duration of Seeds. 



Andrew Henderson Hutchinson. Fertilization in Abies balsamea. 



Eva Ormenta Schley. Physical and Chemical Changes Involved in Geo-pre- 

 sentation and Geo-reaction. 



James Palm Stober. A Comparative Study of Winter and Summer Leaves of 

 Various Herbs. v 



WASHINGTON UNIVERSITY 



Alva Raymond Davis. Enzyme Action in the Marine Algae. 



William Harrison Emig. The Occurrence in Nature of Certain Fungi Patho- 

 genic for Man and the Higher Animals. 



Joseph Charles Gilman. Cabbage Yellows and the Relation of Temperature 

 to Its Occurrence. 



Melvin Clarence Merrill. The Electrolytic Determination of Exosmosis from 

 the Roots of Plants Subjected to the Action of Various Agents. 



Lee Oras Overholts. Comparative Studies in the Polyporaceae. 



UNIVERSITY OF ILLINOIS 



Demetrius Ion Andronescu. The Physiology of the Pollen of Zea Mays with 

 Special Regard to Vitality. 



William Leonidas Burlison. Availability of Mineral Phosphates for Plant 

 Nutrition. 



Fred Weaver Muncie. The Effect of Large Applications of Commercial Ferti- 

 lizers upon Carnations. 



George Leo Peltier. Parasitic Rhizoctonias in America. 



THE JOHNS HOPKINS UNIVERSITY 



Grace Adelaide Dunn. A Study of the Development of Halosaccion ramenl- 

 aceum. 



Forman Taylor McLean. A Preliminary Study of Climatic Conditions in 

 Maryland as Related to the Growth of Soy Bean Seedlings. 



John Wesley Shive. A Study of Physiological Balance in Nutrient Media 

 Resulting in a Simplified Culture Solution for Plants. 



UNIVERSITY OF PENNSYLVANIA 



John Young Pennypacker. Observations on the Beach Plum. A Study in 

 Plant Variation. 



David Walter Steckbeck. Comparative Histology and Irritability of Sensi- 

 tive Plants. 



Heber Wilkinson Youngken. The Comparative Morphology, Taxonomy and 

 Distribution of the Myricaceae of the Eastern United States. 



