To H. W. Bates   20 April [1876]¹

My dear Bates

I sh^d. be greatly obliged to you if you could answer 4 questions.— Perhaps M^r. Rye² w^d be so very kind as to aid you or undertake the task. Prof. Victor Carus is translating into German my book on Coral Reefs & says he cannot find the proper Title & Date of publication of some books to which I ⁠⟨⁠    ⁠⟩⁠ & which I ⁠⟨⁠    ⁠⟩⁠ some 30–40 years ago at the Geographical Soc. or at the Admiralty.³ I refer to a “Memoir on the Pacific, Appendix 1835 by Adm. Krusenstern” It is clear that I here refer in English to some book: what is real Title?—⁴

Secondly, I frequently refer to “Freycinets Hydrographical Memoir”, & V. Carus asks, “is this, Vol 8^th of his Voyage autour du Monde … sur l’Uranie et la Physicienne?” I cannot remember, but rather think there is a separate Hydrographical work. by Freycinet.—⁵

Thirdly I refer to the charts of the Natunas & Anambas, island published in the “Voyage of the Favourite”, & V. Carus asks whether I refer to La Place’s “Voyage de la Favorite”? Do you know of any voyage of the Favourite: I think that I remember consulting La Place.—⁶

Fourthly & lastly was there a voyager of the name of Surville   I refer to such in reference to the Salomon Isl^d.—   V. Carus thinks it is misprint for D’Urville; which I do not believe.⁷ Can you forgive me & aid me?

Yours most truly | Ch. Darwin