John Tyndall to Jane Barnard   1863 to 1868

[Royal Institution embossed letterhead] | Saturday

My dear Miss Barnard

The whistling in Dr Frankland’s lecture was due to the intermittent puffing of a bellows below stairs & applied to keep a fire bright.

Yours truly | John Tyndall

Please cite as “Faraday4733u,” in Ɛpsilon: The Michael Faraday Collection accessed on 30 July 2021,