No summary available.

Has made the changes JH suggested. Autobiography will be published posthumously. Met [Henry W.] Longfellow. Wishes the Herschels would visit because it might improve JH's health.

Consulted A. C. L. G. Günther, museum ichthyologist. Answers JH's question about poisonous herring Clupea thryssa. [A. K.] Johnston's Physical Atlas attributes Ruminants article to GW, but GW wrote only Rodentia article.

It was a great pleasure to receive JH's letter. Sees that he still remembers the day at Portsmouth. Hopes to collect and publish her father's letters and now returns those written to JH.

Comments on the radiant heat of heavenly bodies and the motion of Sirius.

Extensive discussion of comparative anatomy, taxonomy, and distribution of rodents. Encourages JH to use term Hystricidae for porcupines in JH's [Physical Geography (1861)].

Reptile genera in JH's [Physical Geography ] are consistent with those of [Edward] Forbes cited in Johnston's Physical Atlas [1854], but new genera have been discovered. Questions JH's claim that Elgin sandstone is Devonian. Notes Richard Owen's estimates on pterodactyl size, and distinct tail feathers [illustration] on recent specimen from Bavaria. Corrects JH's names for beaver genera.

Is pleased with the interest JH is taking in his volume. Understands the difficulty of comprehending it at once. Further comments on his own dynamical theory of dispersion.

Thanks for answers and for notice on Apteryx [Maerurus ?], which JH remembers watching Richard Owen inspect. Interested in W. B. Carpenter's and C. W. Thomson's ['Bathybius?]' as origin of chalk-flint. Discusses inorganic chemical allotropes. Organic allotropes may exist, serving as 'agents of vital action' and subject to a higher power.

Comments on exchange of astronomical works with JH. CP expects to improve the observatory library now that the Prussians have taken over Altona. Is making arrangements to carry out some pendulum experiments.

Is preparing a new edition of his book Le ciel, which J. N. Lockyer is translating into English. Would like to reproduce new information on shooting stars and meteors and would like JH's assistance.

Is prepared to take charge of Mrs. Mary Somerville's memoir. Found her wonderfully well when he met her at Naples.

No summary available.

Has safely received the packet containing Mrs. Mary Somerville's manuscript. She has been awarded the Victoria medal of the Geographical Society.

No summary available.

Is pleased that his book, the Government of England, meets with JH's approval.

Is happy that his discovery of 70 Ophiuchi was included in JH's catalogue of double stars. Thanks for correction on a logarithm of the focal point equation; intends to change this in Astronomische Nachrichten.

Thanks for the additional information regarding Argus by Elias Loomis and J. Tebbutt; it will appear in the next R.A.S.M.N.

Talks about problems of observing nebulae—one of which seems to have changed—and one of which is in the catalogue and does not seem to exist.

Comments on 'rubbish' published by Poet Laureate, EC's report of the weather of 1849, and the flowers and plants growing in JH's garden.