The cumin fruits (seeds) are elliptical, flat on one side, convex, furrowed, and rough on the other, from 5 to 6 mm. in length and about 1.5 mm. in thickness, and of a light brown color. Each has seven longitudinal ridges. Two mericarps are sometimes seen united. Their odor is peculiar, strong, and heavy; their taste warm, bitterish, aromatic, and disagreeable. They contain about 2.5 per cent. of an essential oil, which is lighter than water, yellowish, and has the sensible properties of the fruits.

Source: United States Dispensatory (1918) ^[1]

Source: Elan M. Sudberg, Alkemist Laboratories ^[2]