VOLTAIC ELECTRICITY.
19
£ s. d.
Silver and zinc wires, for the coronne de tasse, per
dozen . . . . . . .080
De Luc’s columns . . . . . £l to 6 0 0
Fifty pair of plates, l-£ square, in a mahogany trough,
with conducting wires, for medical purposes . 110 0
Fifty 2 inch ditto . . . . . . . 2 10 0
Fifty 3 inch ditto . . . . . . . 3 10 0
Fifty 4 inch ditto . . . . . . .4100
Ten pairs of 4 inch plates, in porcelain trough, box,
and irons, complete . . . . . 1 14 0
Ditto, upon the improved principle of Dr. Wollaston,
for exhibiting quantity of electricity . £2 to 2 4 0
Hare’s calorimotors, for exhibiting electro magnetic
effect . . . . . £10 to 20 0 0
Insulated stands, for exhibiting the combustion of charcoal and fusing of wire, with the voltaic battery . . . . . £1 to 3 3 0
Pepy’s apparatus, for the decomposition of water .070 Glass apparatus, for ditto . . . 10s. to 1 10 0
Ditto, for collecting the oxygen and hydrogen, in separate vessels . . . . 15s. to 1 10 0
Platinum plates, for the decomposition of the alkalies
by the battery . . . . . .330
Pepy’s neat apparatus, for ditto . . . . 1 II 6
Faraday’s improved glass apparatus, for shewing the attraction of acid to the positive, and alkali to the negative, poles of the battery . 5s. to 1 0 0
Apparatus, for the decomposition of the gases, or for
exhibiting the light in vacuo . . .14 0
Voltaic electrometer, shewing the attraction and repulsion of the two poles . . . .2100
Mettallic leaves, for burning, with the battery .
Reels of wire, for the same purpose Compound wires, for shewing the different conducting powers of the metals .....