or COMA-VIGIL, a preternatural propensity to sleep, when, nevertheless, the patient does not sleep, or if he does, awakes immediately without any relief. See Medicine-Index.

Coma Berenices, Berenice's hair, in astronomy, a modern constellation of the northern hemisphere, composed of unformed stars between the Lion's tail and Bootes. This constellation is said to have been formed by Conon, an astronomer, in order to console the queen of Ptolemy Evergetes for the loss of a lock of her hair, which was stolen out of the temple of Venus, where she had dedicated it on account of a victory obtained by her husband. The stars of this constellation, in Tycho's Catalogue, are fourteen; in Hevelius's, twenty-one; and in the Britannic Catalogue, forty-three.

Coma Somnolentum, is when the patient continues in a profound sleep; and, when awakened, immediately relapses, without being able to keep open his eyes.