Folio 598

Barom^r. Ther^r.
gas of dry hydrate of potash
Cub. In of silica ^d,, fluoric gas
315 1/3 Cruc^e
5 [P]al
Barom^r 30.2 Ther. 62^o
Mercury boiled. -
4[g] 4[1]
3[g] 3[x]
1 [8]
8 grs hydrate of Soda previously heated to redness
& weighed while yet hot dissolved in
a little water in tube. -
3 6/10
3 6/10
3 6/10
} 10 8/10 Cub. In. silica ^d fluoric acid /quite pure/
The Salt neither affected Litmus or turmeric paper. -

Potash

An alkaline substance consisting largely of impure potassium carbonate. In October 1807, Davy decomposed potash using electricity, revealing the previously unknown element potassium.

Silex

Symbol/formula: SiO2

Silica, an oxide of silicon.

Mercury

Symbol/formula: Hg

Also known as quicksilver. A heavy, silvery element, mercury is the only metallic element that is known to be liquid at standard temperature and pressure.

Fluoric acid

Symbol/formula: HF

Hydrofluoric acid. A solution of hydrogen fluoride in water.

Litmus

A water-soluble mixture of different dyes extracted from lichens used to test materials for acidity.