15. It is true, as to civil and common conversation, the general names of substances, regulated in their ordinary signification by some obvious qualities, (as by the shape and figure in things of known seminal propagation, and in other substances, for the most part by colour, joined with some other sensible qualities,) do well enough to design the things men would be understood to speak of:
15. Egia da, solasaldi zibil eta arruntetan, substantzien izen orokorrek, beren esanahi arruntean zenbait ageriko koalitatek erregulatuak (hala nola, forma eta irudiak hazizko ugalketa ezaguna duten gauzetan eta beste substantzia batzuetan koloreak gehienbat, beste koalitate sentigarri batzuekin batera), balio dutela gizakiek mintzatzean besteei ulertarazi nahi dizkieten gauzak izendatzeko;