AMPHIBOLE n.
ties varying in color and in composition. It occurs in monoclinic crystals; also massive, generally with fibrous or columnar structure. The color varies from white to gray, green, brown, and black. It is a silicate of magnesium and calcium, with usually aluminium and iron. Some common varieties are tremolite, actinolit…
AMPHIOXUS n.
-- also called the lancelet. Its body is pointed at both ends. It is the lowest and most generalized of the vertebrates, having neither brain, skull, vertebræ, nor red blood. It forms the type of the group Acrania, Leptocardia, etc.
ANGORA n.
at, etc. Angora cat (Zoöl.), a variety of the domestic cat with very long and silky hair, generally of the brownish white color. Called also Angola cat. See Cat. -- Angora goat (Zoöl.), a variety of the domestic goat, reared for its long silky hair, which is highly prized for manufacture.
ANIMAL a.
mone, and other Anthozoa, hydroids, starfishes, etc. -- Animal heat (Physiol.), the heat generated in the body of a living animal, by means of which the animal is kept at nearly a uniform temperature. -- Animal spirits. See under Spirit. -- Animal kingdom, the whole class of beings endowed with animal life. It embra…