A B Wessels gas stove; with ring of gas jets lighted inside; the air rushes in the direction of the arrows; C C; and escaping at the top of the chimney; D D; soon fills the air or fire balloon; which is usually made of paper. Illustration for The Boys Playbook of Science by John Henry Pepper (George Routledge; c.1880). According to the title-page; most of the illustrations were executed by H G Hine on the basis of the authors sketches.