DARWIN MEMORIAL. 97 



1841. On a Remarkable Bar of Sandstone off Pernambuco, on the Coast of 



Brazil. 

 Philos. Mag., 3d ser., XIX, 1841, pp. 257-260. 



1842. Notes on the Effects produced by the Ancient Glaciers of Caernarvonshire, 



and on the Boulders Transported by Floating Ice. 



Philos. Mao;., 3d ser., XXI, 1842, p. 180: Edinb. New Philos. Journal, 

 XXXIII, 1842, pp. 352-353. 



1842. On the Distribution of Erratic Boulders, and on the Contemporaneous 



Unstratified Deposits of South America. 



Trans. Geol. Soc, 2d ser., 1842, VI, pp. 415-432: Proe. Geol. Soc, III, 1842, 

 pp. 425-430: Philos. Mag., 3d ser., XIX, p. 53G: Leonhard & Bronn, Ncues 

 Jahrb. for Min., Geol., &c, 1843, p. 741. 



1842. The Structure and Distribution of Coral Reefs. 8vo. London, 1842. 



1843. Remarks on Charles Maclaren's paper " On Coral Islands and Reefs, 



as described by M. Darwin." 

 Edinburgh New Philos. Journal, XXXIV, 1843, pp. 47-50. 



1844. Observations on the Structure and Propagation of the genus Sagitta. By 



Charles Darwin, F. R. S., V. R G. S. 



Ann. and Mag. of Nat. History, 13, 1844, pp. 1-6, pi. 1, figs. A-D: Ann. de 

 Sci. Nat., 3d series, Zoologie, 1, 1844, pp. 3G0-305, figs. : Fror. N. Not, Bd XXX, 

 no. G30, 1844, pp. 1-6. 



1844. Brief Descriptions of several Terrestrial Planarice and of some remark- 

 able Marine Species, with an Account of their Habits. By Charles 

 Darwin, F. R. S., V. P. G. S. 

 Ann. and Blag, of Nat. History, 14, 1844, pp. 241-251, pi. V, figs. 1-4. 



1844. Geological Observations on the Volcanic Islands, visited during the voy- 

 age of //. M. S. Beagle, together with some brief notices on the 

 Geology of Australia and the Cape of Good Hope. Being the sec- 

 ond part of the Geology of the Voyage of the " Beagle," under the 

 command of Capt. Fitzroy, R. N., during the years 1832 to 1836. 

 8vo. London, 1844. 

 Journ. Geol. Soc., I, p. 556. 



1846. Geological Observations on South America. 8vo. London, 1846. 



1846. An account of the Fine Dust which often falls on Vessels in the Atlantic 

 Ocean. 

 Journ. Geol. Soc., II, 184G, pp. 26-30. 



1846. On the Geology of the Falkland Islands. 

 Journ. Geol. Soc, II, 1S4G, pp. 267-274. 



1848. On the Transportal of Erratic Boulders from a Lower to a Higher Level. 



Jour. Geol. Soc, IV, 1848, pp. 315-323. 



1849. [Geological Instructions, in Admiralty Manual of Scientific Instructions. 



Edited by Sir J. Herschel. 8vo. London, 1849.] 



1850. On British Fossil Lepadidce. 



Quart. Journ. Geol. Soc. London, VI, 1850, pp. 430-440. 



7 



