Faraday to Jacob Herbert   31 March 1843

Royal Institution | 31st March 1843

Sir,

I see no objection to having a covering plate over the top of the lamp chimney as proposed by the Keeper of the Start Point Light House¹; but as the only object is to keep the drops of water that fall from the top of the cowl from entering into the chimney, is it necessary to have it so much as 9 inches in diameter, and is there any necessity for the edge of two inches? Both these circumstances interfere with the free delivery of the air in the chimney into the cowl, which interference should be made as little as possible. But the person who can examine the arrangement on the spot is the best judge of these matters. Mr. Wilkins has, I understand, just returned from thence and can probably speak to the circumstances².

I am | Sir, | Your faithful Servant | (signed) M. Faraday