Note 134 — Chapter VII · DESCRIPTION OF THE SILK-WORM, &c.
Reading edition
This ounce contains 576 grains; 8.5325 of these grains equal seven grains troy. One ounce avoirdupoise is therefore equal to about 533 grains, and between 11-12 and 11-13 ounce avoirdupoise equals one of the above ounces.