See Anatomy, n° 381.

Lung-Wort, in botany. See Pulmonaria.

Lungs of Insects. In the fly-class, the stigmata are extremely numerous; and the trachea which they terminate are branched and divaricated all over the body in an amazing manner, as if every part and particle of the bodies of these little creatures had occasion for its particular air-vessele besides these, however, flies are provided with proper lungs. They have two; and those so very large, that they frequently take up half, and sometimes two thirds, of the body of the animal.—These are two bladders placed side-ways, one by the other, alike in shape and size; and having their origin at the junction of the corselet and body, and, in many flies whose bodies are composed of five rings, extending to the third, and sometimes to the fourth. The size and figure of each of these bladders is such as is necessary to fill almost entirely that cavity of the body in which it is lodged. They each of them touch the sides of this cavity; the part where they join one another is flat, and this commissure forms a line running straight down the body; they are, however, in this part, though so closely in contact, yet not at all joined to one another. This commissure, however, does not reach quite up to the back, or quite down to the belly: there is a small cavity left between each, which was very necessary in both places; the one to give passage to the great artery, the other to the excrements.