Viii PREFACE. 



new lio-ht as to the condition of the North American Continent in 

 Secondary times. The Surveys of the United States, and those of 

 our Indian possessions, continue to make known the vast natural 

 resources of their respective countries, and by their labours to add 

 greatly to geological science. 



These we have had from time to time the pleasure to record, as 

 also the work in progress upon our own Insular Surveys. 



New facts and fossils continually turn up, needing to be published 

 as speedily as possible. 



To this useful work the Geological Magazine may honestly lay 

 claim to have contributed largely ; its pages and plates being stored 

 both with geological and palteontological results of very consider- 

 able importance. 



We therefore hope that our friends and Subscribers will continue 

 to support our Journal as heretofore, and also will induce their 

 brother- Geologists, not only to read — which we are sure they always 

 do — but personally to become annual subscribers to the Geological 

 Magazine. The Editob. 



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, may be sent addressed 

 to the Editor, care of Messrs. Triibner & Co., 8 and 60, Paternoster 

 Kow, E.C. 



Form for Subscribers to fill up and send to their Booksellers. 



To 



Be pleased to add my name to the List as a Subscriber 

 for one copy of Volume VIII. of the Geological Magazine, to be 

 puljlished monthly by Messrs. Trubnek & Co., the First Part of 

 which appeared on January 1, 1871. Price Eighteenpence each 

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