From T. H. Farrer 17 October 1869
Abinger Hall, | Dorking.
17 Oct | /69
My dear Mr Darwin
I have been looking again at Passiflora Cœrulea—at Tacsonia Mollissima— and another very like the one in your greenhouse, also at Sprengels excellent descriptions of P. Cœrulea—1And it strikes me that a comparison of the three suggests more than even Sprengel made out. Perhaps the accompanying notes may interest you especially if you can pull to pieces one of your beautiful pendent flowers.2
Many thanks for a paper received today
Sincerely yours | T H Farrer
Hooker is pleased with the enclosed and thinks if I doctor it up that it will be worth reading at the Linnean. I would prefix a short statement of what Sprengel says about it.3
Sends notes on observations of Passiflora and Tacsonia; Hooker thinks they would be worth reading at Linnean Society.