Lusus naturae

[…]I have obſerv'd ſome meſhes to have 5, 6, 7, 8, or 9. ſides, and ſome to have onely one, ſo exceeding various is the Luſus Naturæ in this body.

After much Debate, they concluded unanimously, that I was only Relplum Scalcath, which is interpreted literally, Luſus Naturæ; a Determination exactly agreeable to the modern Philoſophy of Europe, whose Profeſſors, diſdaining the old Evaſion of occult Cauſes, whereby the Followers of Ariſtotle endeavour in vain to diſguiſe their Ignorance, have invented this wonderful Solution of all Difficulties, to the unſpeakable Advancement of human Knowledge.

All men, the monster and the lusus naturæ excepted, have a certain form, a certain complement of limbs, a certain internal structure, and organs of sense—may we not add further, certain powers of intellect?

I was a lusus naturæ, she affirmed, as a village-schoolmistress: she was sure my previous history, if known, would make a delightful romance.

Of “Lusus naturæ” none is more curious than that of duplication of the lower extremities. Paré says that on January 9, 1529, there was living in Germany a male infant having four legs and four arms.

He avoided all company (being, as he said, ashamed to show himself, the father of a lusus naturæ, among normal, healthy human beings), and took to solitary drinking, which carried him very rapidly to his grave; […].