■Hu 



PREFflGE. 



With some reluctance I enter into the publication of these new forms of 

 Fossils that I have in hands, knowing the many obstacles in the way of a new 

 beginner. But lam offered the assistance and co-operation of some well known 

 authors, and through their assistance and advice I hope to be able to offer to 

 the student and collector some information that maybe of interest to them. 



I have material in hand sufficient for sixty plates. These will be issued in 

 parts, three plates with the descriptions of figures, will constitute a part. These 

 will be for sale at 25 cents each, a sum barely enough to pay for printing, en- 

 graving, etc. Each edition will be limited to 500 copies. After all have been 

 issued, a thorough revision will be made of text and plates, and published in 

 book form. The numbers on pages and on plates will follow in regular order, 

 so that they can be separated and placed in position for binding. 



The class, order and family, etc., will be omitted, for the reason that it 

 would be a waste of space and expense, and would simply be repeated in every 

 part. 



The species described by other authors, in all these publications, will ap- 

 pear under their own name. 



