[614] McElroy; Analyses made in this laboratory.
[615] Annual Report Connecticut Agricultural Experiment Station (New Haven) 1892, p. 30.
[616] Kissling; Tabakkunde, S. 40.
[617] Vid. op. cit. supra, S. 58.
[618] Vid. op. cit. 81, p. 29.
[619] This work, Vol 1, pp. 500 et seq.
[620] This work, Vol. 1, p. 420.
[621] Vid. op. cit. 82, S. 62.
[622] Vid. op. cit. supra, S. 64.
[623] Dragendorff; Plant Analysis, p. 65.