Correspondence. 93 



like a mirror. But that this Glacial condition is constant, and main- 

 tained by conditions unaffected by the revolution or rotation of the 

 Moon, is evident, because no important visible change of colour takes 

 place either at the bases or summits of the mountains or plains 

 which lie, like our polar regions, wrapped in eternal snow. To the 

 geologist, as an analogous condition to the Grlacial period of the 

 earth, this condition of the Moon is of the highest interest. 



Some of these Glacial appearances have not escaped the notice of 

 observers. Professor Frankland, in a lecture delivered at the Eoyal 

 Institution,^ states that, after long observations of the lunar surface, 

 he thinks he has detected evidences of former glacial action and the 

 presence of moraines in the Moon. In 1842, on an occasion of a 

 lunar eclipse, Arago saw at Perpignan, on the Q6.gQ of the Moon's 

 black disk, a fiery protuberance like " an Alpine Glacier " illumined 

 by the setting sun. S. Biech, 



Bkitish Museum, January 19, 1866. 



CARBOlSriFEROUS FOSSILS FOR EXCHAJSTGE, 

 To the Editor of the Geological Magazine. 

 SiK,— On the part of the Bolton Scientific Students' Association, 

 who are about forming a small collection of Geological Fossils, I 

 wish to ask your assistance in enabling our Society to exchange 

 fossils of the Carboniferous system for characteristic fossils of other 

 formations. By this means, collectors who have, it may be, a 

 superabundance of fossils from their own immediate neighbourhood, 

 but who have no facilities for obtaining Carboniferous specimens;, 

 by making a mutual exchange, will be conferring a favour, at the 

 same time they receive a consideration in return. I shall be glad to 

 correspond with any collector on the subject, if, by means of your 

 Magazine, we can be put in communication. — Yours respectfully, 



William Walch, Hon. Sec. 

 29, Heaton Terrace, St. George's Place, Bolton, Jan. 6, 1866. 



THE EARLY APPEARANCE OF MAN IN THE EAST. 

 We have just received (January 19th) a most interesting letter 

 from Mr. Henry F. Blanford, F.G.S., Secretary to the Eoyal Asiatic 

 Society, and of the Geological Survey of India, dated Calcutta, 22nd 

 December, 1865, in which, after referring to the recently-published 

 discoveries of Stone Implements in Lateritic Formations in various 

 parts of the Madras and North Arcot Districts, by Messrs. E. Bruce 

 Foote and William King, jun., he proceeds to say : " Poor Lieut. 

 Irwing discovered worked agates shortly afterwards, in the alluvial 

 deposits of the Nerbudda. Mr. Canne sent a couple of specimens to 

 the Asiatic Society, and they turn out to be 'cores,' very small, but 

 identical in form with that shown in PI. I., fig. 6, of Sir J. Lubbock's 

 work,^ At the last meeting of the Asiatic Society it was announced 



1 See Chemical News, 1864, p. 116. 



2 Pre-historic Times, as illustrated by Ancient Remains, and the Manners and 

 Customs of Modern Savages. By J, Lubbock, F.R.S. London: Williams and 

 Norgate. 8vo. 1865. 



