462 Plant Physiology 



DAVENPORT, C. B. Experimental Morphology. 1 : 1-52. 

 DUGGAR, B. M. Fungous Diseases of Plants. Pp. 85-92, 1909. 

 HEALD, F. D. On the Toxic Effect of Dilute Solutions of Acids 



and Salts on Plants. Bot. Gaz. 22 : 125-153, 1896. 

 JENSEN, C. H. Toxic Limits and Stimulation Effects of some 



Salts and Poisons on Wheat. Bot. Gaz. 43 : 11^14, 34 figs., 



1907. 

 JONES, L. R. Chemical Weed Killers or Herbicides. Bailey's 



Encyclopedia of American Agriculture. 2:115-118, 1908. 



[Also Vt. Agl. Exp. Sta. Report. 12 : 182-188, 1899.] 

 KAHLENBERG, L., and TRUE, R. H. On the Toxic Action of Dis- 

 solved Salts and their Electrolytic Dissociation. Bot. Gaz. 



22 : 81-124. 



LODEMAN, E. G. The Spraying of Plants. 399 pp., 92 figs., 1896. 

 LOEW, O. Ein natiirliches System der Gift-wirkungen. 1893. 

 -On the treatment of Crops by Stimulating Compounds. 



Bui. Coll. of Agl. Imp. Univ. Tokyo. 6 : 161-175, 1904. 

 RICHARDS, H. M. Die Beeinflussung des Wachsthums einige 



Pilze durch chemische Reize. Jahrb. f. wiss. Bot. 30 : 



665-688, 1897. 

 SCHREINER, O., and REED, H. S. Certain Organic Constituents 



of Soils in Relation to Soil Fertility. Bur. of Soils, U. S. 



Dept. Agl. Bui. 47 : 52 pp., 5 pis., 1907. 

 STONE, J. L. Spraying for Wild Mustard. Cornell Agl. Exp. 



Sta. Bui. 216: 107-110. 

 TRUE, R. H., and OGLEVEE, C. S. The Effects of the Presence 



of Insoluble Substances on the Toxic Action of Poisons. 



Bot. Gaz. 39 : 1-21, 1905. 



