Trinity House | 10 May 1858
My dear Sir,
Your reply1 to my Enquiry respecting improvements in the Exhibition of Lights Coloured red, being limited to your unacquaintance with the “Malakoff” Light only,- leads me to think that I did not make myself understood in my official Letter2, and that you took my enquiry as applying to that Light House only.-
The opinion the Board desire is of a mere general Character and I am therefore to trouble you again to ask whether any improvements have come under your observation in the means or appliances for rendering Lights coloured red, by shades or otherwise more powerful and visible at a greater distance than those of this colour in use at this Corporations Light Houses.
Believe me to be | My dear Sir | Yours Very truly | P.H. Berthon
M. Faraday Esq | &c &c &c
Please cite as “Faraday3434,” in Ɛpsilon: The Michael Faraday Collection accessed on