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A rare element of the light platinum group, found associated with platinum ores, and isolated as a hard, brittle steel-gray metal which is very infusible. Symbol Ru. Atomic weight 103.5. Specific gravity 12.26. See Platinum metals, under Platinum.

Cane sugar; sucrose; also, in general, any one of the group of which saccharose, or sucrose proper, is the type. See Sucrose.

A division of Amphibia including the Salamanders and allied groups; the Urodela.

called also struthiin, quilaiin, senegin, polygalic acid, etc. By extension, any one of a group of related bodies of which saponin proper is the type.

wo perpendicular partitions, so that multiplication takes place in two directions, giving groups of four cubical cells. Also used adjectively; as, a sarcina micrococcus; a sarcina group. Sarcina form (Biol.), the tetrad form seen in the division of a dumb-bell group of micrococci into four; -- applied particularly to b…

eptilia formerly established to include the Lacertilia, Crocodilia, Dinosauria, and other groups. By some writers the name is restricted to the Lacertilia.

A comprehensive group of vertebrates, comprising the reptiles and birds.

Of or pertaining to the scalene muscles. Scalene muscles (Anat.), a group of muscles, usually three on each side in man, extending from the cervical vertebræ to the first and second ribs.

A rare metallic element of the boron group, whose existence was predicated under the provisional name ekaboron by means of the periodic law, and subsequently discovered by spectrum analysis in certain rare Scandinavian minerals (euxenite and gadolinite). It has not yet been isolated. Symbol Sc. Atomic weight 44…

An artifical group of birds formerly regarded as an order. They are distributed among several orders by modern ornithologists.

One of a special group of feathers which arise from each of the scapular regions and lie along the sides of the back.

Of or pertaining to the family Scarabæidæ, an extensive group which includes the Egyptian scarab, the tumbleding, and many similar lamellicorn beetles.

A group of nemerteans comprising those having a deep slit along each side of the head. See Illust. in Appendix.

A zeolitic mineral occuring in delicate radiating groups of white crystals. It is a hydrous silicate of aluminia and lime. Called also lime mesotype.

Voting for a group of candidates for the same kind of office on one ticket or ballot, containing a list of them; -- the method, used in France, as from June, 1885, to Feb., 1889, in elections for the Chamber of Deputies, each elector voting for the candidates for the whole department in which he lived, as disting. from…

tc., or into figures, as of men, or other things; hence, the art of producing figures and groups, whether in plastic or hard materials.

A division of a genus; a group of species separated by some distinction from others of the same genus; -- often indicated by the sign §.

A nonmetallic element of the sulphur group, and analogous to sulphur in its compounds. It is found in small quantities with sulphur and some sulphur ores, and obtained in the free state as a dark reddish powder or crystalline mass, or as a dark metallic- looking substance. It exhibits under the action of light a remark…

A group of students engaged, under the guidance of an instructor, in original research in a particular line of study, and in the exposition of the results by theses, lectures, etc.; -- called also seminary.

A carbohydrate of the glucose group found in the thickened endosperm of certain seeds, and extracted as yellow sirup having a sweetish-bitter taste.