Note y — BOOK VIII.
Reading edition
An ingenious Gentlewoman of my Acquaintance, Wife to a learned Physician, taking much Pleasure to keep Silk-Worms, had once the Curiosity to draw out one of the oval Cases, which the Silk-Worm spins——into all the Silken Wire it was made up of, which, to the great Wonder as well of her Husband, as her self,——appeared to be, by measure, a great deal above 300 Yards, and yet weighed but two Grains and an half. Boyl Subtil. of Effluv. ch. 2.