David Brewster to Faraday   20 September 1837

My Dear Mr Faraday,

In reference to our conversation about Lighthouses when I had the pleasure of meeting you at Liverpool¹, I beg leave to mention to you that in 1831 I conceived the Idea of supplying the lamps in lighthouses with Oxygen Gas in place of Atmospheric air. I communicated it in the same year to the Engineer of the Scottish Lighthouse board, & also to Prof Johnstone [sic] of Durham. I mentioned the plan also to Dr Hope, and in April 1833 in No. 115 of the Edin Review p. 192 line 9, I observe that the Lens lamp might be supplied with oxygen gas in place of atmospheric air"². On the subject of Red Glass about which we talked at the Physical section I would beg you to notice the last paragraph of the page above referred to.

I am | My Dear Mr Faraday | Ever Most faithfully Yours | D. Brewster

Allerly by Melrose | Sept 20th 1837

Address: M. Faraday Esq | Royal Institution | Albemarle Street | London