THE BALTIMORE TOOTH. 70 



Longirostris. Sometime after, being seen by .Sir Charles Lyell, this great 

 geologist gave for opinion that it was the tooth of a species " distinct from 

 the Mastodon G-igantenm : " Dr. Hays and Dr. Harlan, of Philadelphia, were 

 of the same opinion. 



The specimen belonged at the time to a collection in the Academy at 

 Baltimore, where it was permanently deposited. 



In the year 1843, a statement was made by Sir Charles Lyell on the 



Miocene deposits of the United States, in which he noticed this tooth. 



Having a curiosity to see it, and being present at the great meeting of 



the American Medical Association at Baltimore in 1848, I applied to my Disappear- 

 ance. 

 friend Dr. Cohen for an opportunity of examining this fossil. But, on inquiry, 



Dr. Cohen ascertained that the collection was dispersed, and the tooth had 



disappeared. Dr. Hays, of Philadelphia, being present in Baltimore at the 



time, joined in the search, and shared with me in the disappointment I 



experienced, as he had known the tooth. 



On my return to Boston, passing through Philadelphia, I visited him ; Re-appear- 

 ance. 

 and, on the same clay, he accompanied me to the splendid collection of the 



Academy of Natural Sciences. While examining the fine array of Mastodon 



teeth, Dr. Hays, fixing on one, immediately said, "This is the Baltimore 



tooth we were looking for, or it is so like it as not to be distinguished from 



it ; " and he further said, that it had been in his possession a considerable 



time (three months, I think). Of course he could not well be deceived. 



On inquiry of Dr. Thomas B. Wilson, who had placed the article in the 



Academy, and to whose kindness I am much indebted for this and other 



valuable aids, he informed us that this same tooth was purchased in 



London, by his brother, of Mr. Charlesworth, who said it was an American 



fossil. (Yide Appendix C.) 



