Faraday to James Timmins Chance 23 April 1860

[Royal Institution embossed letterhead] | London W. | Albemarle St | 23 April 1860.

My dear Sir

Mr Airy tells me he found one of your finished apparatus much out of adjustment and that he required to raise the lamp stand 5/16 of an inch to correct it¹. I have perhaps no right to ask you if this is so - or is so for any reason. I have no doubt if it be so you have a reason for it - but think it may be some mistake of his[.]