Sends address.
Showing 1–9 of 9 items
Sends address.
Requests observations on Drosera and Dionaea,
and asks DO to look up Buchanan and Wight on insectivorous plants ["Conspectus of Indian Utricularia", Hooker’s J. Bot. 1 (1849): 372–4].
Thanks for reference to Annales des Sciences Naturelles.
Requests DO observe rate at which Australian Drosera closes.
On detection of nitrogen in organic fluids.
CD’s observations on preference of Drosera for milk and nitrogenous fluids, and the effect of nitrate of ammonia are interesting. Asks whether CD is satisfied that the effect is not due to density of fluid or to a chemical irritant. His own observations suggest such possibilities.
Lists of nitrogenous organic fluids that produce contraction in Drosera, and details of how to reproduce results.
His results with pure gum on Drosera spathulata entirely support CD’s opinion. Other observations on insectivorous plants.
Requests Dionaea now that he knows Drosera so well. Wants to compare fluids secreted; in Drosera they are acid and have antiseptic effect on meat.
Admires DO’s correlation of spiny tree species and dry hot climate. CD suggests that spines, like strange aroma of desert plants, protect against browsing where there are few plants.
Fragrance and unisexuality.
Dimorphism in Viola tricolor.
Thinks he has worked out simple mechanism of movement in Drosera. Believes he is correct that gum has no effect.
Thanks for Trécul paper ["Organisation des glandes pédicellées de la feuille du Drosera rotundifolia", C. R. Hebd. Acad. Sci. 40: 1355–8; Ann. Sci. Nat. (Bot.) 3d ser. 3: 303–11].
Chloroform paralyses plants in 30 seconds.