CEETACEOUS AND TERTIARY FORMATIONS OF NEW JERSEY. XIII 



pear in their proper places. This work of Professor Whitfield, in bringing 

 the fossils together and in revising and correcting imperfect descriptions, 

 and in making new and better drawings of the fossils, will be appreciated 

 by every paleontologist; and the new species he has been able to add give 

 completeness to the subject, and it is hoped will make the book a useful and 

 standard one both for the student and the field geologist. Heretofore, many 

 of these fossils which were described were not figured, and the descriptions 

 were scattered in so many different works that they were practically inac- 

 cessible to most persons, and especially to those who by their residence on 

 the formations were most competent to make collections. It is a pubKca- 

 tion which has long been looked for by citizens interested in geology, and 

 it is fair to anticipate from its use much benefit to the scientific geology of 

 the region from which its materials are drawn. 



As the collected work of the pioneers in paleontological study on this 

 continent, it becomes of permanent interest to geologists both for the per- 

 sons whose labors it perpetuates and the localities which they explored. 

 I am, with high respect, your obedient servant, 



GEO. H. COOK, 

 State Geologist of New Jersey. 



Maj. J. W. Powell, 



Director U. S, Geological Survey. 



