Note 184 — Introductory material (continued 2)

Kobert, R. Kann ein in einem Pflanzenpulver gefundener abnorm höher Barytgehalt erklärt werden durch direkte Aufnahme von Baryumsalze durch die lebende Pflanze aus dem Boden? Chem. Zeit., vol. 10, p. 491. 1899.

Note.—The writer has also found barium in entirely different botanical families from the loco-weed, and it is hoped a report can shortly be made of some of these.

Note.—The first sample of ash analyzed by the Bureau of Chemistry had 0.21 per cent Fe₂O₃, 0.92 per cent Al₂O₃, 0.98 per cent CaO, 0.37 per cent MgO, 5.50 per cent SiO₂. The second lot was only examined for certain constituents, and gave K₂O, 2.25 per cent; CaO, 1.20 per cent; MgO, 0.41 per cent; P₂O₅, 0.52 per cent; and SO₃, 0.24 per cent.