Jacob Herbert to Faraday   30 January 1856

Trinity House, London, | 30th January, 1856.

Sir,

The Elder Brethren have deemed it necessary to make enquiry of the Irish Light House Board, as to the practical effect of certain vertical Lenses which have been introduced by Mr. Wilkins into the Lighting Apparatus in the Ballycottin Light House, and have also addressed the Light House Board in Paris on the subject of those Lenses, and the Board being desirous of having the benefit of your observations thereon, I am directed to transmit to you in original, the replies which have been received from those Bodies, and to request the communication of any remarks which may occur to you on the subject.-

I shall be obliged by your returning the enclosures, and remain,

Sir, | Your most humble Servant | J. Herbert

M. Faraday Esq.- | &c. &c. &c.