470 Journal of Agricultural Research voi.xiii. No. 9 



absorption of boron, although usually more boron was absorbed by the 

 plants when the boron was added as borax than as colemanite. The 

 amount of boron absorbed by plants depends on the character of the soil 

 more than on the form in which the boron was added. 



The absorption of boron by plants varies with the variety of plant, the 

 solubility of the boron compound, the quantity of the boron compound 

 added to the soil, the time elapsing after the compound is mixed with 

 the soil before planting, the amount of rainfall, etc., and finally with the 

 character of the soil to which the boron compound is added. 



LITERATURE CITED 

 (i) BrenchlEY, Winifred E. 



I914. INORGANIC PLANT POISONS AND STIMtTLANTS. IIO p., illuS., pi. Cam- 

 bridge, [Eng.]. Bibliography, p. 97-106. 



(2) Cook, F. C. 



1916. boron: its absorption and distribution in PLANTS AND ITS EFFECT ON 



GROWTH. InJouT. Agr. Research, v. 5, no. 19, p. 877-890. Literature 

 cited, p. 889-890. 



(3) and Wilson, J. B. 



1917. EFFECT OF THREE ANNUAL APPLICATIONS OF BORON ON WHEAT. In Jour. 



Agr. Research, v. 10, no. 12, p. 591-597- Literature cited, p. 597. 



(4) Hutchinson, R. H., and Scales, F. M. 



I914. experiments in the destruction of fly LARV^ in HORSE MANURE. 



U. S. Dept. Agr. Bui. 118, 26 p., 4 pi. 

 (s) Haselhoff, E. 



1913. uber die einwirkung von borverbindungen auf pflanzenwach- 

 stum. In Landw. Versuchs, Stat., Bd. 39/40, p. 399-429, pi. 4-7. 



(6) Jay, H. 



1895. sur la dispersion de l'acide borique dans la nature. In Compt. 

 Rend. Acad. Sci. [Paris], t. 121, no. 24, p. 896-899. 



(7) Nakamura, M. 



1903. can boric acid in high dilution exert a stimulant action on plants? 

 In Bui. Col. Agr. Tokyo Imp. Univ., v. 5, no. 4, p. 509-512, pi. 28. 



(8) Peligot, Eug. 



1876. DE L 'action que l'acide BORIQUE ET LES BORATES EXERCENT SUR LES 



v^giStaux. In Compt. Rend. Acad. Sci. [Paris], t. 83, no. 15, p. 

 686-688. 



