4to. 26 by 20 cm. 55 pp., with 43 figures, mostly photos, within. With many pointers and tips about healthy breathing, eating, drinking and general hygiene, all relating in some way to the mouth. Some are the points are obvious, while others are full of more esoteric information and facts. Some are also beliefs that have since been invalidated, or not universally subscribed to. Regardless, a sound, and easily readable compendium of popular medicine. Scarce, with the only copy listed on OCLC at Yale. There are three copies listed of a much shorter version (27 pages), probably a typed manuscript, of the text for a slide show, from 1929. Presumably the images in this 1930 pamphlet are the slides of that show.