1, Harewood Place, | Hanover Square. | W.
July 7. 1875
My dear Darwin
Pardon my writing on a railway and let me thank you for your book on Insectivorous Plants.—1the more at this time because, while reading it, I have been thoroughly enjoying myself on what might have been a very dull long journey.— But neither my reading nor my thanks are yet ended—
I am charmed with your suggestion that fairy-rings illustrate the insusceptibility of soils,—whether bloods, tissues, or earths—that have been once infected—2 I have sometimes vaguely thought so, but you make me nearly sure— I have been told that fairy-rings sometimes appear very quickly,—large and complete rings appearing where no small ones were before— I do not know if this ever happens, and I must admit that my informant ascribed the occurrence to electricity; but he said he had observed it on his own lawn—3 If such rings are ever complete from the first, I have thought there might be mutual illustration between them and some annular diseases which one sees in the skin— Some forms of Herpes are from the first annular.— still more often some forms of Psoriasis and of syphilitic ulcers; and when these begin in rings or parts of rings, they usually extend only outwards, and if they meet they coalesce but do not cross— I will try to set some one to work this out—
And, I will not forget your wish for cases of re-growth of amputated members.4
I think I can soon find them and I will send them to you directly—
Always sincerely your’s | James Paget.
Charles Darwin Esq.
Please cite as “DCP-LETT-10048,” in Ɛpsilon: The Charles Darwin Collection accessed on