156 INDEX TO AMERICAN BOTANICAL LITERATURE 
Sherbakoff, C. D. Report of associate plant pathologist. Florida 
Agr. Exp. Sta. Rep. 1917: 76R-86R. f. 3-8. My 1918. 
Includes notes on ‘‘ Vegetable diseases’’ and ‘‘other diseases of importance.” 
Small, J. K. Coreopsis Leavenworthii. Addisonia 3: 65, 66. pl. 113. 
30 D 109018. 
Small, J. K. Diuanthera crassifolia. Addisonia 3: 79, 80. pl. 120. 
30 D 1918. 
Small, J. K. Jussiaea peruviana. Addisonia 3: 75, 76. pl. 118. 
30 D 1918. 
Small, J. K. Lantana depressa. Addisonia 3: 69, 70. pl. I15. 30 
D 1918. 
Small, J. K. Viorna Baldwintit. Addisonia 3: 73, 74. pl. 117. 
30 D 1918. 
Sparhawk, W. N. Effect of grazing upon western yellow pine repro- 
duction in central Idaho. U.S. Dept. Agr. Bull. 738: 1-31. pl. 1-4. 
19 D 1918. 
Standley, P. C. Six new species of trees and shrubs from Mexico. 
‘Proc. Biol. Soc. Washington 31: 131-134. 29 N 1918. 
New species in Vauquelinia (3), Odostemon (2), and Deutzia (1). 
Steinberg, R. A. A study of some factors influencing the stimulative 
action of zinc sulphate on the growth of Aspergillus niger. II. 
A comparison of two strains of the fungus. Bull. Torrey. Club 46: 
1-20. pl. 1 +f. I-4.. 20 Ja 1919; 
Stevens, H.E. Report of plant pathologist. Citrus diseases. Florida 
Agr. Exp. Sta. Rep. 1917: 66R-75R. f. 2. My 1918. 
Stevens, N. E., & Wilcox, R. B. Temperatures of small fruits when 
picked. Plant World 21: 176-183. Jl 1918. 
Swingle, D. B., & Morris, H. E. Crown-gall injury in the orchard. 
Montana Agr. Exp. Sta. Bull. 121: 123-139. f. 1-6. Ja 1918. 
Tanaka, T. Varieties of the Satsuma orange group in Japan. U. S. 
Dept. Agr. CP. & B. L. Cire..§: 1-10; f. fa DD 1088. 
Thomas, H. §S. Comparative studies on respiration—IV. The 
effect of ether on the respiration of wheat. Jour. Gen. Physiol. 1: 
203-207. f. zr. N 1918. ; 
Trelease, W. Winterbotany. i-xl+1-394. Urbana. 1918. [lllust.] 
True, R. H., & others. Physiological studies of normal and blighted 
spinach. Jour. Agr. Research 15: 369-408. 18 N 1918. 
Van Alstine, E. The movement of plant-food within the soil. Soil 
Sci. 6: 281-308. O 1918. 
