My dear Dyer

Could you give or lend me any fir tree in a pot, between 6 & 24 or 28 inches high (including pot), with longish leaves & in a vigorously growing state. I have been observing many leaves carefully & all circumnutate, except doubtfully those of Pinus pinaster; but this plant was only 1$\frac{1}{2}$ inches high, raised from Kew seeds.—²

I am at present interested with seedlings of Oxalis, as the cotyledons of O. Valdiviana rise up vertically at night, whilst those of O. rosea & floribunda sink down vertically at night. They thus all three sleep well. Whereas O. corniculata raises its cots only 45^o. Moreover O. rosea puzzles me just now greatly by the hypocotyledenous stem being sensitive, but not moving itself, though causing the cotyledons to move. This, fact, however, will require much more observation. Now can you give me seeds of any other species of Oxalis besides those which I have as by enclosed little list.³

Frank seems getting on well at Wurzburg & is working away at physiology & at the accursed German language: Sachs is very kind to him.⁴

Yours very sincerely | Ch. Darwin

My unlucky & unhealthy Arachis hypogea is flowering but will not set a single pod, alas, alas.—⁵

P.S | I hope that you have good accounts of M^rs Dyer.—⁶ Where has she gone to?

I know that Hooker⁷ is so busy & overworked that I avoid writing to him.—⁸