Note 165 — Chapter IX · VARIOUS BIRDS NOT INCLUDED IN THE FOREGOING CHAPTERS.
Reading edition
Pliny makes mention of a “swallow-stone,” but says nothing about its being found in the nest. On the contrary, he says it is found in the stomach of the bird! “In ventre hirundinum pullus lapilli candido aut rubenti colore, qui ‘chelidonii’ vocantur, magicis narrati artibus reperiuntur.”