Note a — BOOK IV.
Reading edition
Piece of Ambergrease suspended in a Pair of Scales, that would turn with a very small Part of a Grain, lost nothing of its Weight in 3½ Days; neither did Assa fœtida in 5½ Days; but an Ounce of Nutmegs lost 5½ Grains in 6 Days; and Cloves 7⅘ Grains. Boyl’s Subtil. of Effluv. c. 5.