Note 167 — BOOK XI. THE VARIOUS KINDS OF INSECTS.

The suddenness of their appearance, no doubt, was fabulous; but we have well-authenticated cases in recent times of substances growing on the human head, to all appearance resembling horns, and arising from a disordered secretion of the hair. Witness the case of Mary Davies, a so-called horn from whose head is preserved in the Ashmolean Museum at Oxford. The story of Genucius Cippus, the Roman prætor, is told by Ovid, Met. B. xv. l. 565, et seq.