- All bodies rubbed violently, as stone, wood, cloth, etc., so that rudders, and axles of wheels, sometimes catch fire, and the West Indians obtain fire by attrition.
- Green and moist vegetable matter confined and rubbed together, as roses, peas in baskets; so hay, if it be damp when stacked, often catches fire.
- Quicklime sprinkled with water.
- Iron, when first dissolved by acids in a glass, and without any application to fire; the same of tin, but not so intensely.
- Animals, particularly internally; although the heat is not perceivable by the touch in insects, on account of their small size.
- Horse dung, and the like excrement from other animals, when fresh.
- Strong oil of sulphur and of vitriol exhibit the operation of heat in burning linen.
Table of Contents
APHORISMS—BOOK II ON THE INTERPRETATION OF NATURE, OR THE REIGN OF MAN
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