or *Ambergrise*, in natural history, is a solid, opaque, ash-coloured, fat, inflammable substance, variegated like marble, remarkably light, rugged and uneven in its surface, and has a fragrant odour when heated. It does not effervescence with acids; melts freely over a fire, into a kind of yellow rosin, and is hardly soluble in spirit of wine. Ambergris is greatly used by perfumers on account of its sweet smell. In medicine it is used for nervous complaints. It is found in great quantities in the Indian ocean, near the Molucca islands, as also near Africa, and sometimes near the northern parts of England, Scotland, and Norway. There has been many different hypotheses concerning the origin of ambergrase; but the most probable is that which supposes it to be a fossil bitumen, or naphtha, exuding out of the bowels of the earth, in a fluid form, and distilling into the sea, where it hardens, and floats on the surface.