The Editor requests that Contributors will bear in mind the 

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 their articles explicit and intelligible to general readers. 



Students or others wishing for information on particular points of 

 Geology, or for explanation of Geological terms and phrases, are re- 

 quested to address their questions to the Editor of The Geologist. 

 Answers will be given to them in the ensuing number of the Magazine. 



All communications and articles are deemed gratuitous unless by 

 special arrangement with the Editor and Proprietor. 



Letters and communications by Post, specimens, books for review, 

 and parcels for this Magazine, to be addressed to The Editor of the 

 Geologist, 154, Strand, London, W.C, to whom all advertisements 

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SUBSCRIPTIONS TO THE GEOLOGIST MAGAZINE FOR THE CURRENT YEAR 



ARE NOW DUE. 



COERESPONDENTS. 



Communications received from G. V. Du Notee, Esq., Dublin; Thomas David- 

 son, Esq., Brighton ; Dr. Isaac Lea, Philadelphia, U.S.; C. C; Major Austin, 

 Bristol ; Mr. Monk ; W. Noeman ; T. Thompson, Esq., Wilton, near Hull ; 

 Mr. G. E. Egberts, Kidderminster; H. C. Salmon, Esq., Plymouth; Dr. 

 Watson ; Subscriber, Redlands ; Mr, E. Tindall, Bridliugt,on ; A. le S. M. ; 

 Eev. B. S. Malden, Canterbury; John Cliff, Esq. ; Kev. F. F. Statham, 

 Walworth ; C. Brereton, Esq., Beverley; M. Morlot, per Sir C. Lyell. 



BOOKS RECEIVED. 



" Contributions to Geology." By Isaac Lea, L.L.D. Carey and Co., Phila- 

 delphia. 



"Description of New Fossil Shells from the Tertiary of Petersburg, PA." 

 By H. C. Lea. 



" Catalogue of the Tertiary Testacea of the United States." By H. C. Lea. 

 Mcrrihew and Thompson, Philadelphia. 



"Descriptions of Twenty-seven Species of Uniones from Georgia." By 

 Dr. Isaac Lea. Philadelphia, Merrihew and Thompson. 



" On the Fossil Footmarks in the Red Sandstone of Pottsville." By Dr. 

 Isaac Lea. 



" Notice of the Oolitic Formation in America, with Descriptions of its Organic 

 Remains," By Dr. Isaac Lea. 



" Biographical Sketch of Richard Cowling Taylor." By Mr. Lea. 



" Description of a New Mollusk from the Red Sandstone near Pottsville, PA." 

 By Dr. Isaac Lea. INIerrihew and Thompson, Philadelphia. 



I' On the Sandstone Fossils of Connecticut River." By James Deane, M.D. 



" Descriptions of the Embryonic Forms of Thirty-eight Species of Unionidtc." 

 By Dr. Isaac Lea. 0' 6 f 



Canadian Journal of Industrial Science and Art." November, 1859. 



"Explanations to accompany the Sheet 184 of the Map of the Geological 

 Survey of Ireland, illustrating part of the County of Kerry;' London, Long- 

 man and Co., 1859. J J > b 



"Canadian Naturalist and Geologist." October, 1859. 



^'Ciuiadian Journal." September, 1859. 



" Geology in the Garden." By H. Eley, M.A. London, Bell and Daldy, 1859. 

 1 rocoedmgs of Manchester Geological Society." 



Tennanf s Elementary Collections. 200 specimens at £5 5s.; and 300 speci- 

 mons at £10 10s. ^ 



