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The latter clearly describes the disease and uses the name lytta, but, singularly enough, claims for man an exemption from the general susceptibility to the infection by inoculation.1 From that date to this the successive outbreaks, sufficiently noteworthy to secure a place in history, are so numerous and widespread as to show a continuous prevalence of the malady in the Old World, and, since the early part of the eighteenth century, in the New.

The mischief that has frequently arisen from the exhibition of the Lytta vesicatoria has been observed and recorded by every medical practitioner.

Unwormed, un-wurmd′, adj. not wormed, not having had the worm or lytta under the tongue cut out—of a dog.

Lytta, lit′a, n. a longitudinal vermiform cartilaginous or fibrous band on the under surface of the tongue in carnivores—the 'worm' of a dog's tongue.

These Blister-flies belong to the genus Lytta, and are used as a substitute for the Spanish-fly of Europe, as they are possessed of blistering qualities in no mean degree.