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From Sparks Life of Franklin, sent me by Mr. C. Norton

Copy

To Dr. Franklin

Lichfield, 24 January, 1774.

Dear Sir,

I have enclosed a medico-philosophical paper, which I should take it as a favor if you will communicate to the Royal Society, if you think it worthy a place in their volume; otherwise, I must desire you to return it to the writer. I have another very curious paper containing experiments on the colours seen in the closed eye, after having gazed some time on

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luminous objects, which is not quite transcribed, but which I will also send to you, if you think it is likely to be acceptable to the Society at this time, but will otherwise let it lie by me another year.

I hope you continue to enjoy your health, and that I shall some time again have the pleasure of seeing you at Staffordshire.

I am, dear Sir,

Your affectionate friend,

Erasmus Darwin.