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mance; a deed. That best portion of a good man's life, His little, nameless, unremembered acts Of kindness and of love. Wordsworth. Hence, in specific uses:

Capable of being acted. Tennyson.

Pertaining to the part of a radiate animal which contains the mouth. L. Agassiz.

A large division of Anthozoa, including those which have simple tentacles and do not form stony corals. Sometimes, in a wider sense, applied to all the Anthozoa, expert the Alcyonaria, whether forming corals or not.

Operating in any way.

An animal of the class Anthozoa, and family Actinidæ. From a resemblance to flowers in form and color, they are often called animal flowers and sea anemones. [See Polyp.].

Of or pertaining to actinism; as, actinic rays.

Having a radiated form, like a sea anemone.

The property of radiant energy (found chiefly in solar or electric light) by which chemical changes are produced, as in photography.

A supposed metal, said by Phipson to be contained in commercial zinc; -- so called because certain of its compounds are darkened by exposure to light.

Chemistry in its relations to actinism. Draper.

A record made by the actinograph.

An instrument for measuring and recording the variations in the actinic or chemical force of rays of light. Nichol.

Having the form of rays; radiated, as an actinia.

A bright green variety of amphibole occurring usually in fibrous or columnar masses.

Of the nature of, or containing, actinolite.

The science which treats of rays of light, especially of the actinic or chemical rays.

One of the radial segments composing the body of one of the Coelenterata.

An instrument for measuring the actinic effect of rays of light.

taining to the measurement of the intensity of the solar rays, either (a) heating, or (b) actinic.