Matter, for a biologist, comes in two kinds:
- mineral matter: matter of the non-living world — water, air’s gases, rock, the dissolved mineral salts of Proposition 22.3;
- organic matter: matter made by living things and composing their bodies — wood, leaf, muscle, fat, sugar, wool. Burnable, rottable, and always traceable to a living maker.
Examples
Example 40.2 (Sorting a pocketful)
From a coat pocket after a walk: a pebble — mineral; a hazelnut — organic (a hazel made it); a plastic button — organic by origin, oddly enough (plastics are made from oil, the transformed remains of ancient living things); a drop of rain — mineral; a woolly glove — organic (a sheep made the wool).