NOTES AND COMMENT 33 



CHICAGO UNIVERSITY 



Sarah Lucinda Doubt. Response of plants to illuminating gas. 



George Konrad Karl Link. A physiological studj' of Fusarium in re- 

 lation to potato disease. 



Edith Adelaide Roberts. The epidermal cells of roots. 



Rachel Emilie Hoffstadt. The 'vascular anatomy of Piper methys- 

 ticum. 



Millard S. Markle. The root systems of certain desert plants. 



Mabel Lewis Roe. The development of the conceptacle in Fucus. 



Charles Albert Shull. Measurement of the sm-face forces of soils. 



Arthur Gibson Vestal. The phytogeography of the eastern mountain- 

 front in Colorado. 



Frank Earl Denny. Permeabihty of certain plant membranes to 

 water. 



Alphaeus William Dupler. The gametoph}i:es of Taxus Canadensis 

 Marsh. 



Leslie Alva Kenoyer. Environmental influences of nectar secretion. 



HARVARD UNIVERSITY 



Sumner Gushing Brooks. Studies on the permeability of plant pro- 

 toplasm. 

 George Gaulterus Stevens. The flora of Oklahoma. 



THE JOHNS HOPKINS UNIVERSITY 



Ai'thur Gillett McCall. The physiological balance of nutrient solu- 

 tions for plants in sand cultures. 



UNIVERSITY OF PENNSYLVANIA 



Ai'abel Wilson Clark. Seasonal variation in water content and trans- 

 piration of leaves of beech, witch hazel and white oak. 



CORNELL UNIVERSITY 



WiUiam Carlyle Etheridge. A classification of the cultivated varieties 



of oats. 

 Arthur Jackson Mix. Studies on the sun scald of fruit trees. 

 Otis Freeman Curtis. The stimulation of root growth with special 



reference to the formation of roots in cuttings. 

 Louis ]Melville Massey. The hard rot disease of Gladioh. 



THE PLANT WORLD, VOL. 20, NO. 1 



