Faraday to Samuel March Phillipps   19 October 1844

Royal Institution | 19 Octr. 1844

Dear Sir

Mr Lyell has just brought me the inclosed¹ which I now return to you[.] The writer is not aware of what is done already at the coal mines where a system like to but more perfect & extensive than that he proposes is applied. Thus at the Haswell pit instead of pipe having an area of 36 square inches they have one (the whole downcast shaft) of above 100 square feet or 15000 square inches; and instead of the amount of air which he wishes by act of Parliament to send into the mine they actually send in nearly 20 times as much[.]

We hope early in the week to send in our full report² & have a strong belief that it may eventually prove useful[.]

I am Sir | Your Obedient faithful Servant | M. Faraday

S.M. Phillipps Esq | &c &c &c | Home Office