Note 1450 — LETTER XLVIII.
Reading edition
Other systems or methods have been promulgated by various authors, as by Schæffer, Scopoli, Geoffroy, &c. Walckenaer and Blainville have proposed one founded on the number of the legs of insects; but those in the text are the principal and best known.—N. Dict. d'Hist. Nat. xvi. 277.