My dear Sir
I have been looking over my notes on E. palustris & shd. much like to see a few more flowers just on point of opening.2 Should you think me very unreasonable if I were to ask you to send me a few: I have enquired and am told it does not grow here.—
I have never heard whether it grows near you: if it does & you could visit the spot twice, I would ask you to try a little experiment, viz to cut off the terminal & movable division of the Labellum in 6 or 8 flowers which had not quite opened & which therefore could not have been visited by insects; & mark these flowers with little bits of thread & then see if these set pods as well as the other flowers.— But this little experiment would be useless if this is a species which does not freely in ordinary cases set pods.— I would not on any account have you take much trouble to try this; but if I had the opportunity I shd. try it for bare chance: of its showing that this terminal portion of Labellum was of use, as I suspect, in guiding and aiding some unknown insect in its proper function of fertilising the flowers.—3
My dear Sir | Yours sincerely | Charles Darwin
Please cite as “DCP-LETT-3203,” in Ɛpsilon: The Charles Darwin Collection accessed on