LETTER OF TRANSMITTAL. 



New Brunswick, N. J., September 1, 1889. 



Sir: I have the honor to trausrait herewith to you, for publication and 

 diistribution under the arrangements for cooperation which prevail, Prof 

 Robert P. Whitfield's text and drawings of the Mollusca and Crustacea of 

 the Miocene formations of New Jersey. - The book has been prepared with 

 gi-eat industry and care, and is deemed worthy of ;i place among those valu- 

 able monographs of the United States Grovernirient which are written and 

 published under your supervision and direction. It is important to all who 

 are interested, either theoretically or practically, in the geology of the State. 

 Neighboring States are of course sharers in the fruits of this prolonged 

 investigation, and the relation of the paleontology of New Jersey to the 

 structural conditions prevailing in other parts of the United States makes 

 this in every sense a national work. 



I am, with* high respect, your ol)edient servant, 



Geo. H. Cook, 

 State Geolo(/id of Neiv Jersey. 

 Hon. J. W. Powell, 



Director U. S. Geological Survey. 



