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Walter Palmer Thompson: The anatomy and relationships of the Gne- 
tales. I. The genus Ephedra. 
CoLuMBIA UNIVERSITY 
Fred Denton Fromme: The morphology and cytology of the aecidium- 
cup. 
Louis Otto Kunkel: Physical and chemical factors influencing toxicity 
of inorganic salts to Monilia sitophila (Mont.) Sacc. 
UNIVERSITY OF ILLINOIS 
Philip Augustus Lehenbauer: Growth in relation to temperature. 
John Hamilton Whitten: The effect of kerosene and other petroleum 
oils on the viability and growth of Zea mats. 
UNIVERSITY OF WISCONSIN 
Elbert T, Bartholemew: Physiological changes causing black heart in 
potatoes. 
Howard Austin Edson: Damping off and root decay of sugar beets. 
Edward Martinius Gilbert: Cytological studies on the Tremelineae. 
Martin Perry Henderson: Studies on the black leg disease of cabbage. 
Aaron Guy Johnson: The helminthosporium diseases of barle 
George Wanamaker Keitt: Peach “Scab” (Cladosporium carpophilum 
Thum) and its control 
Gilbert Morgan Smith: Organization of the colony in certain four- 
celled coenobic algae. 
UNIVERSITY OF MICHIGAN 
John Henry Ehlers: Winter temperature of the leaves of the Pine. 
UNIVERSITY OF MINNESOTA 
Harry Vaughn Harlan: Some distinctions in our cultivated barleys with 
reference to their use in plant breeding. 
ulius Valentine Hofmann: Natural reproduction of coniferous forests. 
UNIVERSITY OF CINCINNATI 
Emma Lucy Braun: The physiographic ecology of the Cincinnati region. 
UNIVERSITY OF MISSOURI 
William Henry Chandler: The killing of plant tissue by low temper- 
ature. 
UNIVERSITY OF NEBRASKA 
Mélvin Randolph Gilmore: On the uses of plants by the Indians of the 
Nebraska region. 
