424 LOUIS AGASSIZ. 



several branches of our science. He has made 

 me acquainted, also, with a young naturalist 

 from the interior of Pennsylvania, Mr. Baird, 

 professor at Dickinson College, in Carlisle, 

 Pennsylvania, who offered me duplicates from 

 his collections of birds and other animals. In 

 order to avail myself more promptly of this 

 and like acquisitions, I wish that M. Coulon 

 would send me at the close of the winter all 

 that he can procure of the common Euro- 

 pean birds, of our small mammalia, and some 

 chamois skins, adding also the fish that Charles 

 put aside for me before his departure. It 

 would be safest to send them to the care of 

 Auguste Mayor. 



At Philadelphia I separated from my trav- 

 eling companion, Mr. Gray, who was obliged 

 to return to his home. From Philadelphia, 

 Mr. Haldeman and Mr. Lea accompanied me 

 to Bristol, where Mr. Vanuxem possesses an 

 important collection of fossils from ancient 

 deposits, duplicates of which he promises me. 

 Mr. Vanuxem is one of the official geologists 

 of the State of New York, and author of one 

 of a series of volumes upon the geology of 

 the State, about which I shall presently have 

 something to say. To gain time I took the 

 night train from Bristol to New York, and 



