The Editor requests that Contributors will bear in mind the 
POPTJLAE. character of The Geologist, and endeavour to make 
their articles explicit and intelligible to general readers. 
Students or others wishing for information on particular points of 
Geology are requested to address their questions to the Editor of 
The Geologist. Answers will be given to them in an ensuing 
number of the Magazine. 
All communications and articles are deemed gratuitous unless by 
special arrangement with the Editor. 
Contributors can have a limited number of re-prints of their 
articles for private distribution at a slight charge, by communicating 
their desire to the Editor on the transmission of their manuscripts. 
Letters and communications by Post, specimens, books for review, 
and parcels for this Magazine, to be addressed to the Editob of the 
Geologist, 156, Strand, London, W.C, to whom all Advertisements 
may be addressed. 
Articles for publication in an ensuing number of the Magazine 
should be sent in before the 14th, and Advertisements by the 21st 
of the month. 
The Editor requests subscribers to forward their names and 
addresses direct to himself to insure correctness of delivery. 
The Geologist is sent by Post free to Subscribers for six months 
on receipt of a Post- Office order for 5s. 9d., or 6s. in Postage Stamps; 
Post-Office orders are to be made payable to the Editor, at the 
Strand Post-Office. 
Geologist Office, S. J. MACKIE, 
156, Strand. Editor and Proprietm; 
The Subscriptions to this Magazine are Kow due. 
CORRESPONDENTS. 
Communications received from G. H. Morton, Esq., Liverpool ; T. Davidson, 
Esq., F.G.S. ; Rev. Hugh Mitchell, Craig; W. S. Horton, Esq., Liver- 
pool ; J. W. Crocker, Esq., Kew ; Rev. S. Lucas, Launceston ; H. C. Sal- 
mon, Esq., F.G.S. ; J. E. Calvert, Esq., F.G.S., Lahore; W= Geossart, Esq.; 
Miss MaoNeille. 
The August Number will contain a full report of the Geological Section of the 
British Association Meeting. 
BOOKS, &c., RECEIVED. 
" The Canadian Naturalist." May, 1860. 
• " Manchester Geological Society's Journal of Transactions." April, 1860. 
" Abstracts of Proceedings of the Royal Institution." 
" On some of the Dififereucea in Deposition of Coal." By S. Haines, Esq. of 
Lightcliffe. Leeds: E. Baines & Son. 
" The Dental Review." Vol. II. No. 6. June, 1860. London : Bailliere. 
" Rambles Round Chard with a Hammer." By J. Jones. Chard : T. Young. 
1860. 
" The Geological Examiner." By D. Page, F.G.S. London and Edinburgh, 
Blackwood. 1860. 
"The Future." No. L London : Trubner & Co. 1860. 
" The Old Glaciers of Switzerland and North Wales." By A. C. Ramsay, 
F.R.S., F.G.S. London : Longman & Co. 1860. 
" The Rocks of Worcestershire." By G. E. Roberts. London : J. Masters. 
1860. 
"The American Journal of Science and Arts." Conducted by Professors 
Silliman and J. D. Dana. Vol. XXIX. Nos. 85, 86, 87. New Haven. 1860. 
" Lettres sur les Roches du Jura et leur Distribution G^ographique dans lea 
deux Hemispheres." By Jules Marcou. Vols. I. and II. Paris : F. Klincksieck. 1860. 
" Geological Gossip ; or Strgy Chapters on Earth and Ocean." London : 
Routledge & Co. 1860. 
