A treatise on diet, or the management of human life; by physicians called the six non-Naturals, viz. I. The air. II. Food. III. Excretions and retentions. IV. Motion and rest. V. Sleep and watching. VI. The affections of the mind. Intended as an inquiry into causes of diseases in general, and in particular of those most common in London ... / By Francis de Valangin.

Licence: Public Domain Mark

Credit: A treatise on diet, or the management of human life; by physicians called the six non-Naturals, viz. I. The air. II. Food. III. Excretions and retentions. IV. Motion and rest. V. Sleep and watching. VI. The affections of the mind. Intended as an inquiry into causes of diseases in general, and in particular of those most common in London ... / By Francis de Valangin. Source: Wellcome Collection.