Note 276 — I.—PHÆNOGAMOUS OR FLOWERING PLANTS. (continued 2)

The statement of Biltz (1831) that an opium collected by himself from poppies grown in 1829 at Erfurt afforded 33 per cent. of narcotine is contrary to the experience of all other chemists. The same must be said of Mulder’s assertion respecting an opium giving 6 to 13 per cent. of narceine.