[585] Annual Report, U. S. Department of Agriculture, 1886, p. 354.

[586] This work, Vol. 2, p. 318.

[587] Vid. California Bulletins cited under 50: Wolff; Aschen Analyse, S. 126.

[588] Bulletin 100, Cornell Agricultural Experiment Station: Bulletin 48, Chemical Division, U. S. Department of Agriculture.

[589] Vid. op. cit. 51, p. 353.

[590] Vid. op. cit. ultimo sub 54.

[591] Bulletin No. 42, Arkansas Agricultural Experiment Station, p. 78.

[592] Annual Report, U. S. Department of Agriculture, 1884, p. 347.

[593] Spencer; Bulletin 13, U. S. Department of Agriculture, pp. 875 et seq.

[594] Journal of Analytical and Applied Chemistry, Vol. 4, p. 390; Bulletin 13, Chemical Division, U. S. Department of Agriculture, p. 889.