TABLE OF CONTENTS 
Studies in the Physiology of the Fungi. 
XII. Physiological Specialization in 
Rhizoctonia Solani Kühn...... Takashi Matsumoto 
Studies in the Physiology of the Fungi. 
XIII. The Effect of Hydrogen-Ion 
Concentration upon the Accumulation 
and Activation of Amylase Produced 
by Certain Fungi.. ..Joanne L. Karrer 
Two New Senecios from the West Indies 
. M. Greenman 
A Monograph of the Genus Lesquerella 
Edwin B. Payson 
e «96906 oc oo © 8 6 9 4 9 + Se. o eee oe re 
Studies in the Physiology of the Fungi. 
XIV. Sulphur Nutrition: The Use of 
Thiosulphate as Influenced by Hydro- 
gen-Ion Concentration......George M. Armstrong 
Studies in the Physiology of the Fungi. 
XV. Germination of the Spores of Cer- 
tain Fungi in Relation to Hydrogen-Ion 
Concentration ...... 15:298 7 2. Robert W. Webb 
The Sizes of the Infective Particles in 
the Mosaic Disease of Tobaeco....... 
Tilletia mexicana in Missouri.. ...H. R. Rosen 
Some North American Tremellaceae, Dac- 
ryomycetaceae, and Auriculariaceae... 
General Index to Volume VIII... 
.E. A. Burt 
PAGE 
1- 02 
63- 96 
97-102 
103-236 
231—281 
283—341 
343-356 
357-360 
361-396 
397—400 
