LETTER OF TRANSMITTAL. 



New York, October 1, 1888. 



Sir: I herewith transmit to you descriptions and illustrations of the 

 Gasteropoda and Cephalopoda of the Greensand Marls and accompanying 

 beds of New Jersey, which will form a second part of the report on the 

 fossil remains of the State. 



In presenting this second report, I wish again to express my thanks 

 for the aid which you have so often given me in the selection and exami- 

 nation of material from the many collections under your charge ; and also 

 to express through you my thanks for the kindness and courtesy with 

 which my many demands have been met by the officers of the Academy 

 of Natural Sciences of Philadelphia, Pennsylvania, and especially to thank 

 their curator. Prof. Angelo Heilprin, who has kindly selected and sent me 

 many specimens from the collection under his charge. I have also been 

 greatly favored by the use of specimens from the cabinet at the School 

 of Mines of Columbia College in New York, through the kind offices 

 of Dr. J. S. Newberry and Dr. N. L. Britton. I have also been allowed 

 to use and figure very many specimens from the collection at the Ameri- 

 can Museum of Natural History, New York City, for which I must express 

 my thanks to the trustees of that institution. There are also several private 

 collections to which I am indebted, through yourself, for the use of valu- 

 able, material and for which I here wish to express my thanks. 

 Yours, very truly, 



R. P. Whitfield. 



Prof George H. Cook, 



State Geologist of New Jersey. 



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