William Crane Wilkins to Faraday   3 November 1852

[Wilkins’s letterhead] 24 Long Acre | 3rd Novr 1852

Sir

Pray pardon my not having sent you the undermentioned particulars before[.]

I am | Sir respectfully | Your Obedient Servant | W.C. Wilkins

Consumption of Lamps ¹

[7.625 pints] Lamps with 4 Wicks 3qts 1 1/2 Pint & 1/2 Gill

[7.875] ditto with breaker without a centre wick - 3qts 1 1/2 Pint & 1 1/2 Gill

[4.0] Lamps with 3 Wicks [2 quarts]

[0.4375] Argand Lamps - 1 3/4 Gills

The above consumption is for 8 hours -

M Faraday Esq | &c &c &c