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JH has won the gold medal of the Academy of Sciences, and 635 francs, for his work on double stars. Sends his congratulations. The medal will be presented by the president.
Tierra del Fuego and the barren coasts of Patagonia are "singularly unfavourable to the insect world". In the tropics, however, CD captured minute Coleoptera by the hundreds – which should result in his bringing home many undescribed species.
Is sending a cargo of specimens – birds’ skins, small quadrupeds, and fossil bones.
Describes his overland trip from Rio Negro to Buenos Aires and his expedition to Santa Fé.
Asks for mineralogical works to help him with the volcanic rocks of the west coast.
His troubles during the revolution have ended well.
Now plans to investigate geological formations at Rio Negro. Is concerned about the expense but cannot bear to miss seeing "one of the most curious pieces of Geology".
Mentions letters sent in parcel and those from CD received by Fox and Henslow. Adds news of family and friends.
Appreciation of his journal. She hears that CD’s "theory of the Earth" is the same as Lyell’s in 3d volume [of Principles of geology (1833)].
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Has been working hard on collecting English and foreign birds. Yarrell has written of new birds discovered in England.
News of work in progress by Leonard Jenyns, P. J. Selby, and John Gould.
Cautions CD to beware of insects when he sends any birds’ skins – otherwise there will be only feathers, beaks, and legs remaining when he returns.
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Has translated some of JH's astronomical works, and is asking JH to comment on the accuracy of JP's translation.
Has now completed his examination of the mode of reading off the barometer of J. W. G. Bu[t]zengeiger, made under the direction of H. C. Schumacher. Comments on the readings. Has now sent off all the Italian papers. Hopes JH will have a prosperous voyage.
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Sending shot or powder is illegal, but all CD’s goods and chattels have been sent. EL’s services to CD are what any Englishman should do for his country.
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