Significados de small residuum em inglês

On evaporation it leaves a very small residuum of carbonate of lime, and perhaps a little nitrate of potash.

Here, too, was obtained, on the melting of the snow, a small residuum, consisting of a black powder containing metallic iron.

Handful after handful he washed, shifting and teasing it about in the pan, and then he cast it out, always leaving some very small residuum.