Jacob Herbert to Faraday   31 October 1849

Trinity House London | 31 October 1849.

My dear Sir,

I have been instructed to transmit to you the accompanying Copy of a Letter from the Principal Keeper of the High Light House at Portland¹, having reference to the ventilation of the Lantern thereof, in connection with the Hot Air Stove, - and to signify the request of the Board, to be favor’d with your observations thereon. -

I remain, | My dear Sir, | Very faithfully your’s | J. Herbert

M. Faraday Esq