Reports on a setter puppy born of apparently pure pointer parents. Any cross must have been far back.
Comments on forthcoming edition [7th (1847)] of CL’sPrinciples. Mentions other books relevant to CL’s needs by Hooker, H. G. Bronn, Edward Forbes, and J. G. Kölreuter. Discusses his own books on volcanoes and the geology of S. America.
Mentions expected visit to Down by the Lyells.
Results of crosses inPhlox.
Grateful for AH’s long letter and suggestions. Delighted at what he says about "complemental males". CD feared no one would believe in them but now that Owen, Dana, and AH accept them, he is content.
Agrees with AH on cross-impregnation; has collected facts on this head but has done nothing with them.
AH’s paper onAlcippe[Ann. & Mag. Nat. Hist.2d ser. 4 (1849): 305–14] caused him to lose sleep over its anomalous structure.
Provides another case of apparently pure bred pointers producing litter with one setter puppy. Correspondent was told that this occurred in several litters; gives names of owners and others who can corroborate the information.
Thanks WDF for his offer of assistance in collecting varieties of poultry. Describes his needs. He will raise his own pigeons.
Often doubts whether, despite all help, the problem of species will not overpower him.
CD experiments: sowing seeds in fields; "breaking" seeds’ constitution with coloured light; plant hybridisation. Compiling works on hybridism.
Respect for W. B. Carpenter.
Note on "nectar secreting" toGardeners’ Chronicle[Collected papers1: 258–9].
Draft of queries on the varieties of hollyhocks. [To be transmitted to William Chater by JSH; probably enclosed with1778.]
Is trying to procure some cocks for CD.
Believes Scotch deerhounds are mongrels.
Hybrids ofPhasianus versicolorbreed freely between themselves as well as with common pheasants. Has been assured that hybrids between mallards and pintails are sometimes fertileinter se.
Darwin Correspondence Project
Cambridge University Library
West Road
Cambridge
CB3 9DR
UK
© University of Cambridge 2018
Website by Surface Impression
© 2019 University of Cambridge