Feb. 7,1916 
Boron 
889 
(9) The yield of tomatoes in pot tests was unaffected when borax was 
added in amounts to produce 0.0018 per cent of boron in the soil, but 
when the amount was increased to 0.0030 per cent, a reduced yield 
resulted. 
(10) Numerous factors influence the absorption, distribution, and 
action of boron in plants. 
(11) No more than 0.62 pound of borax or 0.75 pound of calcined 
colemanite should be added to each 10 cubic feet of manure, and when 
using the boron-treated manure in growing leguminous plants, the ma¬ 
nure should be mixed with untreated manure before being applied to the 
soil. For other plants, boron-treated manure should not be used at a 
higher rate than 15 tons per acre. 
literature cited 
(1) Agulhon, H. 
1910. Recherches sur la presence et le rdle du bore chez les veg6taux. 163 p., 
6 pi. Paris. 
(2) Bertrand, Gabriel. 
1912. Sur le r 61 e des infiniment petits en agriculture. In Trans, and Organ. 
8th Intemat. Cong. Appl. Chem. 1912, p. 31-49. 
(3) -and Agulhon, H. 
1912. Sur la presence normale du bore chez les animaux. In Compt. Rend. 
Acad. Sci. [Paris], t. 155, no. 3, p. 248-251. 
(4) BrenchlEy, Winifred E. 
1914. Inorganic Plant Poisons and Stimulants, nop., illus., pi. Cambridge, 
[Eng.]. Bibliography, p. 97-106. 
( 5 ) - 
1914. On the action of certain compounds of zinc, arsenic, and boron on the 
growth of plants. In Ann. Bot., v. 28, no. no, p. 283-301, 17 fig. 
(6) Cook, F. C., Hutchison, R. H., and Scales, F. M. 
1914. Experiments in the destruction of fly larvae in horse manure. U. S. 
Dept. Agr. Bui. 118, 26 p., 4 pi. 
(7) Haselhoff, E. 
1913. Uber die Einwirkung von Borverbindungen auf das Pflanzenwachstum. 
In Eandw. Vers. Sta., Bd. 79/80, p. 399-429, pi. 4-7. 
(8) Heckel, E. 
1875. De Taction de quelques composes sur la germination des graines (bro- 
mure de camphre, borate, silicate et ars6niate de soude). In Compt. 
Rend. Acad. Sci. [Paris], t. 80, no. 17, p. 1170-1172. 
(9) Hotter, Eduard. 
1890. fiber das Vorkommen des Bor im Pflanzenreich und dessen physiolo- 
gische Bedeutung. In Landw. Vers. Sta., Bd. 37, p. 437-458. 
(10) Loew, O. 
1892. Ueber die physiologischen Functionen der Calcium- und Magnesium- 
salze im Pflanzenorganismus. In Flora, Jahrg. 75 (n. R. Jahrg. 50), 
Heft 3, p. 368-394. 
(n) Morel, J. 
1892. Action de Tacide borique sur la germination. In Compt. Rend. Acad. 
Sci. [Paris], t. 114, no. 3, p. 131-133. 
(12) PeligoT, Eug. 
1876. De Taction que Tacide borique et les borates exercent sur les veg£taux. 
In Compt. Rend. Acad. Sci. [Paris], t. 83, no. 15, p. 686-688. 
