When the heavier hydrocarbons begin to come over the receiver is changed and the butyraceous distillate is filtered through a long column of well dried animal charcoal.

The butyraceous gold in tubs and huge lumps displayed in these stalls looks as though it was precipitated from milk squeezed from Channel Island cows, those fawn-colored, fairest of dairy animals.

L. E. D.—In distillation with water, it yields a small portion of a butyraceous oil, whose flavour exactly resembles that of the roses.

The butyraceous oil produced by the distillation of roses for making rose-water in this country is valueless as a perfume; and the real otto was scarcely known in British commerce before the present century.