Observations of proofs of recent elevation on the Coast of Chili, made during the survey of H.M.S. "Beagle," commanded by Capt. Fitzroy (1837). _Geol. Soc. Proc._, vol ii., 1838, pp. 446-449. A sketch of the deposits containing extinct Mammalia in the neighbourhood of the Plata (1837). _Geol. Soc. Proc._, vol. ii., 1838, pp. 542-544; _Ann. Sci. Nat._ Tom. vii., (Zool.) 1837, pp. 319, 320. On certain areas of elevation and subsidence in the Pacific and Indian Oceans, as deduced from the study of coral formations (1837). _Geol. Soc. Proc._, vol. ii., 1838, pp. 552-554; _Froriep, Notizen._ Bd. iv., 1838, col. 100-103. Geological Notes made during a survey of the East and West Coasts of South America in the years 1832, 1833, 1834, and 1835; with an account of a transverse section of the Cordilleras of the Andes between Valparaiso and Mendoza. _Geol. Soc. Proc._, vol. ii., 1838, pp. 210-212. Origin of saliferous deposits. Salt Lakes of Patagonia and La Plata. _Geol. Soc. Jour._, vol. ii. (pt. 2), 1838, pp. 127, 128. On the connexion of certain volcanic phenomena, and on the formation of mountain chains, and the effects of continental elevations. _Geol. Soc. Proc._, vol. ii., 1838, pp. 654-660; _Geol. Soc. Trans._, vol. v., 1840, pp. 601-632; _Poggendorff, Annal._ Bd. lii., 1841, pp. 484-496. Monographia Chalciditum, by Francis Walker. (Vol. ii., Species collected by C. Darwin.) London, 1839, 8vo. Note on a rock seen on an iceberg in 16° South Latitude. _Geog. Soc. Jour._, vol. ix., 1839, pp. 528, 529. Ueber die Luftschifferei der Spinnen. _Froriep, N. Not._ Bd. lxxvii., No. 222, 1839, pp. 23, 24. Observations on the Parallel Roads of Glen Roy, and of other parts of Lochaber in Scotland, with an attempt to prove that they are of marine origin. _Phil. Trans._, 1839, pp. 39-82; _Edinb. New Phil. Jour._, vol. xxvii., 1839, pp. 395-403. On a remarkable bar of Sandstone off Pernambuco, on the coast of Brazil. _Phil. Mag._, vol. xix., 1841, pp. 257-260. Notes on the effects produced by the ancient glaciers of Caernarvonshire, and on the Boulders transported by floating ice. _Edinb. New Phil. Jour._, vol. xxxiii., 1842, pp. 352, 353. On the distribution of the erratic boulders, and on the contemporaneous unstratified deposits of South America (1841). _Geol. Soc. Proc._, vol. iii., 1842, pp. 425-430; _Geol. Soc. Trans._, vol. vi., 1842, pp. 415-432. The structure and distribution of Coral Reefs. _Geog. Soc. Jour._, vol. xii., 1842, pp. 115-119; _Poggendorff, Annal._ Bd. lxiv., 1845, pp. 563-613; _Edinb. New Phil. Jour._, vol. xxxiv., 1843, pp. 47-50. Observations on the structure and propagation of the genus Sagitta. _Ann. Nat. Hist._ Tom. xiii., 1844, pp. 1-6; _Ann. Sc. Nat._ (Zool.) Tom. i., 1844, pp. 360-365; _Froriep, Notizen._ Bd. xxx., 1844, col. 1-6. Brief descriptions of several Terrestrial Planariæ and of some remarkable Marine species, with an account of their habits.