Summary

Reports observations on Indian pigeons from David Scott at Hansi. EB adds remarks on Indian breeds he has encountered. Suggests Egypt, Turkey, and Syria would be good places from which to obtain specimens. Believes domestic races are all descended from Columba livia; their calls are all similar and they pair indiscriminately.

Guinea-fowl.

Summary

Discusses CL’s Second visit to the United States [1849]. Corrects CL’s error regarding location of Megatherium finds.

Summary

Mentions illness of Emma Darwin.

Comments on CL’s Second visit to the United States [1849].

His water treatment by J. M. Gully.

CD’s contribution ["Geology"] to J. W. Herschel’s Manual of scientific enquiry [(1849), Collected papers 1: 227–50].

Summary

Orders books [Hugh Miller, Foot-prints of the Creator (1849)

and Carl Wilhelm von Humboldt, Thoughts and opinions of a statesman, Sir Arthur Helps, ed. (1849)].

Summary

Asks MEL to translate page of paper by Sven Lovén ["Ny art af Cirripedia", Ofvers. K. Vetensk. Acad. Forh. Stockholm 1 (1844): 192–4]. CD is "dreadfully interested" in the barnacles [Alepas squalicola] described.

Hopes Charles Lyell’s "craters of Denudation" prosper.

Summary

Thanks him for specimens of Alcippe.

Comments on sketches by AH and on cirripede paper by Lovén.

Discusses Lithotrya and its burrowing habits.

Summary

Thanks JSH for information and suggestions on benefit clubs,

and for a shipment of fossil cirripedes.

Summary

CD believes that floating ice and glaciers produce indistinguishable effects in actions such as scoring or polishing rocks.

Summary

Does not recommend that JDH publish extracts of his letters from India in the Athenæum.

CD criticises JDH’s observations on glacial deposits in Himalayas as insufficiently clear and detailed.

CD will live to finish barnacles and make a fool of himself over species.

Summary

To make his monograph on cirripedes complete, would appreciate a specimen of Alepas squalicola, which CD is sure is a new genus.

Summary

CD thinks great dam across Yangma valley is a lateral glacial moraine.

Reports on Birmingham BAAS meeting.

Details of water-cure.

Barnacles becoming tedious; careful description shows slight differences constitute varieties, not species.

Lamination of gneiss.

Summary

Thanks WJH for information on J. D. Hooker’s progress.

J. D. Hooker promised a copy of his Galapagos paper. Can WJH forward one to the Athenaeum?

Summary

Thanks correspondent for lecture tickets, but regrets he will be unable to attend.

Summary

Inquires about parcel of cirripede specimens lost in transit. Asks him to tell Steenstrup about the loss.

Summary

Encloses a letter to be forwarded to Sven Lovén, asking for a specimen of a remarkable cirripede. Still anxious to receive JGF’s specimens.

Summary

Discusses CL’s refutation of CD’s concept of "craters of elevation" and CL’s new concept of "craters of denudation". Mentions examples of such craters. Admits that his own concept of these craters was unsatisfactory. Urges CL to publish article ["On craters of denudation", Q. J. Geol. Soc. Lond. 6 (1850): 207–34].

Summary

Has had his portrait taken;

is anxious about scarlet fever among his children.

Summary

Regrets that state of his health prevents acceptance of invitation [to be present at inauguration of J. S. Henslow as President of Ipswich Museum in Dec 1850].