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Alcyonaria, its polyps somewhat resembling flowers with eight fringed rays. The term was also formerly used for certain species of sponges.

art in the 16th century and known by the sign of the anchor and the dolphin. The term has also been applied to certain elegant editions of English works.

tained by condensation of two molecules of acetaldehyde: CH3CHO + CH3CHO = H3CH(OH)CH2CO; also, any of various derivatives of this. The same reaction has been applied, under the name of aldol condensation, to the production of many compounds.

Orig., an officer appointed to look to the goodness of ale and beer; also, one of the officers chosen by the liverymen of London to inspect the measures used in public houses. But the office is a sinecure. [Also called aletaster.] [Eng.]

ally made of glass or metal. It has mostly given place to the retort and worm still. Used also metaphorically. The alembic of a great poet's imagination. Brimley.

It is endemic along the Mediterranean, and is probably due to a specific bacillus. Called also Aleppo ulcer, Biskara boil, Delhi boil, Oriental sore, etc.

An alarm from a real or threatened attack; a sudden attack; also, a bugle sound to give warning. "We have had an alert." Farrow. On the alert, on the lookout or watch against attack or danger; ready to act.

Of or pertaining to a chain of islands between Alaska and Kamtchatka; also, designating these islands.

A North American fish (Clupea vernalis) of the Herring family. It is called also ellwife, ellwhop, branch herring. The name is locally applied to other related species.

o species of the genus Smyrnium, formerly cultivated and used as celery now is; -- called also horse parsely.

A plant (Macrochloa tenacissima) of North Africa; also, its fiber, used in paper making.

ic plants which includes the black, red, and green seaweeds, as kelp, dulse, sea lettuce, also marine and fresh water confervæ, etc.

The Carob, a leguminous tree of the Mediterranean region; also, its edible beans or pods, called St. John's bread.

A native or one of the people of Algiers or Algeria. Also, a pirate.

ement in a line or lines; the state of being so adjusted; a formation in a straight line; also, the line of adjustment; esp., an imaginary line to regulate the formation of troops or of a squadron.

Supplying food; having the quality of nourishing; furnishing the materials for natural growth; as, alimental sap.

include not only the fatty acids and other derivatives of the paraffin hydrocarbons, but also unsaturated compounds, as the ethylene and acetylene series.

part of the hydrogen has been replaced by basic, and another part by acid, atoms or radicals.

ta, strontia, and magnesia, possessing some of the qualities of alkalies. -- Alkaline metals, potassium, sodium, cæsium, lithium, rubidium. -- Alkaline reaction, a reaction indicating alkalinity, as by the action on limits, turmeric, etc.

class of substances occurring ready formed in the tissues of plants and the bodies of animals.