AMERICAN GEOLOGISTS AND NATURALISTS. 17 



there described. On seeing this work, Dr. J. had been able so to 

 identify them, and he now concairred in the views expressed con- 

 cerning them by Prof. Hubbard. 



Prof. Mather stated that he had found an entire analogy in 

 the fossils of the slates on the Hudson river, in Rensselaer and 

 Saratoga counties, and in the western parts of the State. 



Mr. Vanuxem confirmed the statements of Mr. Mather in re- 

 gard to the identity of these slates. 



Mr. W. C. Redfield made some observations concerning the 

 fossils in the flagging slates employed in the city of New York. 

 These slates are generally obtained from the counties of Greene 

 and Ulster, N. Y. He referred to the corner of Cedar street and 

 Broadway, and to the walk in front of the Spring street church, 

 near the Hudson, as exhibitions of these impressions. 



Prof. H. D. Rogers observed, that the pavement in front of 

 the United States Bank, (Philadelphia,) aftbrded a similar exhi- 

 bition. 



Dr. Jackson now offered some general remarks upon the ge- 

 ology of the states of Maine and New Hampshire. 



At 12 o'clock the Association adjourned, as a mark of respect 

 to the memory of General Harrison, late President of the United 

 States, whose funeral took place at that hour. 



April 1th, 1 o'clock, p. m. — The Association met. Prof. Sil- 

 LiMAN in the chair. After the transaction of some ordinary busi- 

 ness, 



IVIr. W. C. Redfield laid on the table sundry specimens of 

 fossil fishes found in the red sandstone formations of Connecti- 

 cut, Massachusetts, and New Jersey. 



Of eight species from these formations comprised in the collec- 

 tion, five species are found to belong to the genus ralconiscus, and 

 tliree species to the genus Catopterus. It is remarkable that nearly 

 all of these several species are common to most of the known local- 

 ities of these fossils in the above mentioned states. The importance 

 of this fact, as aiding to establish the contemporaneous character of 

 these formations, induced Mr. R. to place this collection before the 

 Association. 



Mr. R. stated that the lithological appearances of the shales in 

 which the fossil fishes are found, as well as of the more minute and 

 undetermined fossils which they contain, are nearly alike in all the 

 localities which he has visited in the above mentioned States. Slight 

 contortions of the strata, with small faults or dislocations, which in 

 some cases affect the fossil specimens, are also common to the sev- 

 eral localities, and seem to be referable to like causes. 



