thin bottle capable of standing heat—half-filled with water, which may be boiled on occasion,—and having its cork pierced with a small tube drawn at its outer end to a very fine bore. The breath is impelled into the bottle, and, the bottle being then reversed, a very fine stream issues with great force. [Illustration: Fig. 1.] [Illustration: Fig. 2.] [Illustration: Fig. 3.] [Illustration: Fig. 4.] [Illustration: Fig. 5.] [Illustration: Fig. 6.]