328 LIFE AT DOWN. /liTAT. 33-4$. 



" Brief Descriptions of several Terrestrial Planariae, &c.," 

 Ann. Nat. Hist, xiv., 1844, pp. 241-251. 



"An Account of the Fine Dust* which often Falls on 

 Vessels in the Atlantic Ocean," Geol. Soc. Journ. ii., 1846, 

 pp. 26-30. 



" On the Geology of the Falkland Islands," Geol. Soc. 

 Journ. ii., 1846, pp. 267-274. 



" On the Transportal of Erratic Boulders, &c.," Geol. Soc. 

 Journ. iv. 1848, pp. 315-323.! 



The article " Geology," in the Admiralty Manual of Scientific 

 Enquiry (1849), pp. 156-195. This was written in the spring 

 of 1848. 



" On British Fossil Lepadidae," 'Geol. Soc. Journ.' vi., 1850, 

 pp. 439-440. 



"Analogy of the structure of some Volcanic Rocks with 

 that of Glaciers," ' Edin. Roy. Soc. Proc.' ii., 1851, pp. 17-18. 



Professor Geikie has been so good as to give me (in a 

 letter dated Nov. 1885) his impressions of my father's article 

 in the 'Admiralty Manual.' He mentions the following 

 points as characteristic of the work : 



* A sentence occurs in this paper [1847], has a long paper on it. He 

 of interest, as showing that the says : ' Some glacialists have ven- 

 author was alive to the importance tured to explain the transportation 

 of all means of distribution : " The of boulders even in the situation of 

 fact that particles of this size have those now referred to, by imagining 

 been brought at least 330 miles from that they were transported on ice 

 the land is interesting as bearing floes,' &c. He treats this view, 

 on the distribution of Cryptogamic and the scratching of rocks by ice- 

 plants." bergs, as almost absurd ... he has 



f An extract from a letter to finally stirred me up so, that (with- 

 Lyell, 1847, is of interest in connec- out you would answer him) I think 

 tion with this essay : " Would you I will send a paper in opposition to 

 be so good (if you know it) as to the same Journal. I can thus in- 

 put Maclaren's address on the en- troduce some old remarks of mine, 

 closed letter and post it. It is and some new, and will insist on 

 chiefly to enquire in what paper he your capital observations in N. 

 has described the Boulders on America. It is a bore to stop one's 

 Arthur's Seat. Mr. D.Milne in the work, but he has made me quite 

 last Edinburgh ' New Phil. Journal ' wroth " 



