Note 2767 — II.—CRYPTOGAMOUS or FLOWERLESS PLANTS.
Reading edition
The red colour of an alcoholic solution may serve for the detection of small quantities of ergot in flour. The reaction with potash, and evolution of the characteristic odour of herring brine may assist in the same object. Extraction of the fatty oil with carbon bisulphide may also be recommended as a test, inasmuch as good cereal grains contain but a very small percentage of fat.