BIOGRAPHICAL SKETCH 



of shells, which could be obtained more easily 

 and better in New York than anywhere else, 

 were easy to preserve and always of value for 

 ornament and study. 



The restraint of a limited income did not 

 prevent the accumulation of a very fine cab- 

 inet, chiefly of excellent specimens, during the 

 ten remaining years of his life. By thor- 

 oughly identifying and labeling these, he in- 

 creased their value so that they were eagerly 

 bought by the late Prof. Stimpson for the 

 Chicago Academy of Sciences, after Mr. 

 Cooper's death. 



The collections of shells made by his son, 

 Dr. J. G. Cooper, and others on the west 

 coast of North America were made the sub- 

 ject of a report forming one of the Pacific R. 

 R. series for i860, the last work written by 

 Mr. Cooper and intended only as a prelim- 

 inary article. 



Mr. Cooper himself collected during these 

 years on the coasts of Maine and Nova Scotia, 

 where he made dredging excursions with his 

 second son, William, during the summers of 

 1858 and 1862, obtaining numerous rare 



