— 421 —
Secondly, Names of simple Ideas and Modes signify always both real and nominal Essence.       §3. Secondly, The Names of simple Ideas and Modes, signify always the
real, as well as nominal Essence of their Species. But the Names of natural
Substances, signify rarely, if ever, any thing but barely the nominal
Essences of those Species, as we shall shew in the Chapter, that
treats of the Names of Substances in particular.
Locke Hum III, 4, §3, p. 421