To William Wilson 14 June 1832

My dear Sir,

I am much obliged by your observations on my hybrid & more so by your remarks on the stomata. Do you know that Brown and Brogniart differ on the latter question? Brown says the stomata are not perforated, but have a membrane across them, & that their functions are glandular. Your observations appear to favor this opinion. Pray look again at the subject. Do you ever see the Annales des Sciences - an excellent periodical in which Brogniart is continually publishing his phisiological researches. He & Brown has published separate accounts of the mode of impregnation [letter torn] Orchideae & Asclepiadeae, which tally in all essential particulars wonderfully well. I have not yet put by a sufficient No. of fresh specimens to make it worthwhile sending you a packet, but I did not like to leave Cambridge without thanking you for your last. The 2 Mosses are very interesting & your notes valuable. I am going to Weymouth for 3 months & hope to have a good spell at the Algae which I know little or rather nothing about.

Believe me

Very sincerely Yrs

J. S. Henslow

N.B. this has been carried by me into Berkshire (& it is now 25 June)