Thanks HWB for information on Volucella, although he does not know when he will use it.
Is glad HWB is beginning his book.
CD is beginning work on his orchid book.
Showing 1–20 of 27 items
Thanks HWB for information on Volucella, although he does not know when he will use it.
Is glad HWB is beginning his book.
CD is beginning work on his orchid book.
Query on orchid homology.
Critical of F. A. Bauer on orchids [Illustrations of orchidaceous plants (1830–8)].
Orchid anatomy.
No summary available.
No summary available.
Thanks for JG’s book [An introduction to the Trochilidae, or family of humming-birds (1861)], which he has read carefully. Hopes someday to use the information on the close alliance of species in large genera.
CD repudiates hybridity of birds in nature.
Intends to extract the cases of "races" or doubtful species. They show that "determination of species is not a simple affair".
No summary available.
Asks DO to look for nectar in Stanhopea saccata labellum. CD’s theory predicts nectar should be present, but afraid there is none.
Finds no trace of nectar in Stanhopea saccata.
Fancies articles on "The queen bee" and "Drone influence" [J. Hortic. 8 October 1861, p. 39] may be of interest. Since writing the latter, one of his drones hybridised a queen at a distance of a mile and a half.
No summary available.
No summary available.
Notes several cases of "dioecio-dimorphism" in different genera; feels the discovery of pollen that will act only on the pistil of another flower is most important. Believes CD should next turn his attention to investigating cases of "precocious fertilisation".
Orchid anatomy: movement in Mormodes column.
Asks whether WED has signed the articles of partnership in the bank.
Has been working at orchid drawings with G. B. Sowerby, Jr.
Orchid anatomy. Catasetum exemplifies slight modification of structure leading to new structure.
Orchid anatomy. Wind as agent of self-fertilisation in orchids.
Discusses business matters relating to WED and the bank.
Orchid anatomy. Movements of labellum.
Repeating Gärtner’s experiment with Verbascum varieties.
Tells of a shooting competition at Down.
Has been working hard at orchid drawings with G. B. Sowerby, Jr.