TO OIJE GEOLOGICAL FRIENDS AND THE 

 SCIENTIFIC PUBLIC. 



The Tenth Volume of the Geologicai Magazine, forming Decade 

 I. of that Journal, is now completed. The New Year, 1874, 

 witnesses the beginning of a " Neiv Series,'^ and the commencement 

 of Decade II. 



Looking back to the early days of this work, in 1864, we have to 

 deplore the loss of many dear and distinguished friends and fellow- 

 labourers in this branch of science who have passed from amongst 

 us; but we gratefully recognize a large accession of new and 

 able geologists and palaeontologists, who have already rendered 

 valuable aid to the Geological Magazine. 



We need and desire for the coming Decade the support of every 

 Geologist in this Country, in the Colonies, and in America; and 

 earnestly beg them to give us their subscriptions and contributions. 



For ourselves, we assure them that no effort shall be wanting on 

 our part to render the Geological Magazine in every respect 

 deserving of their continued support. 



Annual Subscribers should send in their names and subscriptions 

 to Messrs. Tkubnee & Co., 57 and 59, Ludgate Hill, London, E.C. 



The Geological Magazine can always be obtained through all 

 Booksellers in town or country ; but if any difficulty or delay arises 

 through this method of procuring it, the Publishers will be happy to 

 send it direct per post. 



The Editor. 



London, December 23, 1873. 



All Communications for the Geological Magazine should be 

 addressed to the Editor, 142, St. Paul's Eoad, Camden Square, N.W. 



Books for Eeview, and Parcels from Abroad, should be sent 

 addressed to the Editor, care of Messrs. Tbubner & Co., 57 and 59, 

 Ludgate Hill, London, E.G. 



