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the union of two oxides, two sulphides, selenides, or tellurides, as distinguished from a haloid compound. [R.] Berzelius.

One of a pair of shelly plates found in some cephalopods, as the ammonites.

A halo opposite the sun, consisting of a colored ring or rings around the shadow of the spectator's own head, as projected on a cloud or on an opposite fog bank.

A genus of gigantic cephalopods, allied to the squids, found esp. in the North Atlantic and about New Zealand.

A cephalopod of the genus Argonauta.

A genus of Cephalopoda. The shell is called paper nautilus or paper sailor.

used to denote the salts formed from those acids whose names end -ic (excepting binary or halogen acids); as, sulphate from sulphuric acid, nitrate from nitric acid, etc. It is also used in the case of certain basic salts.

The circle of rays, or halo of light, with which painters surround the figure and represent the glory of Christ, saints, and others held in special reverence.

A cephalopod of the extinct genus Baculites, found fossil in the Cretaceous rocks. It is like an uncoiled ammonite.

e side, into a delicate concave blade; the thunderstone. It is the internal shell of a cephalopod related to the sepia, and belonging to an extinct family. The belemnites are found in rocks of the Jurassic and Cretaceous ages. -- Bel*em*nit"ic, a.

-- Blue blood. See under Blood. -- Blue buck (Zoöl.), a small South African antelope (Cephalophus pygmæus); also applied to a larger species (Ægoceras leucophæus); the blaubok. -- Blue cod (Zoöl.), the buffalo cod. -- Blue crab (Zoöl.), the common edible crab of the Atlantic coast of the United States (Callinectes h…

crabs, characterized by a small and short abdomen, which is bent up beneath the large cephalo-thorax. [Also spelt Brachyoura.] See Crab, and Illustration in Appendix.

A cephalopod, belonging to the genus Loligo and related genera. There are many species. They have a sack of inklike fluid which they discharge from the siphon tube, when pursued or alarmed, in order to confuse their enemies. Their shell is a thin horny plate, within the flesh of back, shaped very much like a quill pen.…

, 35.4. Chlorine family, the elements fluorine, chlorine, bromine, and iodine, called the halogens, and classed together from their common peculiariries.

nt skin of such animals as possess them. They are highly developed and numerous in the cephalopods.

A small kind of seedless raisin, imported from the Levant, chiefly from Zante and Cephalonia; -- used in cookery.

A cephalopod of the genus Sepia, having an internal shell, large eyes, and ten arms furnished with denticulated suckers, by means of which it secures its prey. The name is sometimes applied to dibranchiate cephalopods generally.

strongly ignited with carbon and soda or potash. It conducts itself like a member of the halogen group of elements, and shows a tendency to form complex compounds. The name is also applied to the univalent radical, CN (the half molecule of cyanogen proper), which was one of the first compound radicals recognized.…

The division of Cephalopoda which includes the squids, cuttlefishes, and others having ten arms or tentacles; -- called also Decapoda. [Written also Decacera.] See Dibranchiata.

A division of the dibranchiate cephalopods including the cuttlefishes and squids. See Decacera.