John MacCulloch to Faraday   2 February 1835¹

Sir

Some years ago I collected a quantity of the fucus pygmaeus (that was), on account of its suffocating smell of Iodine, meaning to examine it for that end. For the same reason I collected some of the lichen caesius, expecting to find that substance, first, in this plant, & possibly, afterwards, in others. I have had no opportunity since, & never may. It is a pity to destroy two plants which are difficult to procure in any quantity. If you take any interest in the matter they are at your service; & should you choose to send one of your messengers, they shall be left for you, addressed in the shop of Mr Still², Surgeons instrument maker 4, Leicester place[.]

You will of course excuse this address from one who is a stranger to you, personally, though not otherwise[.]

Your very obedient | J. MacCulloch

Address: Michael Faraday | Esq | &c &c &c | Royal Institution | Albemarle Street

Postmark: 2 February 1835