PHILADELPHIA,
PUBLISHED MONTHLY BY
RICHARDS & CALEB JOHNSON,
No. 31, Market Street,
At $3.00 per annum.
Griggs & Dickinson—Printers, Whitehall.
FOOTNOTES:
[1] See Priestly's Experiments and Observations on different kinds of Air, begun in 1767.
[2] Recherches chemiques sur la vegetation, chap. ii.
[3] This was a discovery of Sennebier.
[4] It is by a knowledge of this fact, that gardeners bleach chicony and cellery, &c.