348 NOTES AND COMMENT 



UNIVERSITY OF CALIFORNIA 



Richards Morris Holman. The Orientation of Terrestrial Roots with Par- 

 ticular Reference to the Medium in Which They Are Grown. 



Harry Stanley Yates. The Comparative Histology of Certain California 

 Boletaceae. 



COLUMBIA UNIVERSITY 



Arthur Percival Tanberg. Experiments on the Amylase of Aspergillus Orygal. 

 Arthur Waldorf Spjttell Thomas. The Influence of Certain Acids and Salts 

 upon the Activity of Malt Amylase. 



UNIVERSITY OF NEBRASKA 



Richard Hans Boerker. Ecological Investigations with Certain Forest Trees. 

 Clarence Jerome Elmore. The Diatoms (Bacillarioideae) of Nebraska. 



YALE UNIVERSITY 



Isaac Faust Harris. Chemical and Physiological Studies of the Castor Bean 

 and Soy Bean. 



Henry Daggett Hooker, Jr. Thermotropism and Hydrotropism. 



BROWN UNIVERSITY 



Benjamin Samuel Levine. The Removal of Natural Impurities of Cotton 

 Cloth by Action of Bacteria. 



CATHOLIC UNIVERSITY 

 Daniel Da Cruz. A Contribution to the Life History of Liliutn tennifolium, 



HARVARD UNIVERSITY 

 Guilford Bevil Reed. Studies in Plant Oxidases. 



INDIANA UNIVERSITY 

 Fermen Layton Pickett. Arisaema triphyllum. A Biological Study. 



UNIVERSITY OF MICHIGAN 



Adrian John Pieters. The Relation between Vegetative Vigor and Repro- 

 duction in Some Saprolegniaceae. 



UNIVERSITY OF WISCONSIN 



Howard Edward Pulling. The Movement of Water in Aerated Soils. 



D T. MacDougal. 



