360 PROCEEDINGS OP THE ACADEMY OP 



Prof. Cope took the opportunity of correcting a misapprehen- 

 sion which had arisen with respect to the age of the Galisteo sand- 

 stones of New Mexico. Prof. Stevenson remarks that "a careful 

 comparison of this section, as given by Dr. Hayden, with the de- 

 tails of the geology along Dr. Newberry's route from Santa Fe 

 westward, as given in Ives' report, will, I think, satisfy everybody 

 that Dr. Hayden has by some oversight inverted the order, and 

 that the GalisteCgroup underlies the coal group. The Galisteo 

 group is unquestionably the Triassic, as abundantly appears from 

 the description of that system in New Mexico, by Newberry and 

 Leconte." Prof. Cope had studied the Galisteo sandstone both 

 on Galisteo Creek and on the eastern slope of the Zandia Moun- 

 tains. In both localities he found it to underlie cretaceous No. 3, 

 without the intervention of a coal bed. He therefore supposed 

 it to be above the coal, as stated by Dr. Hayden, and a member 

 of the cretaceous series, differing from some of the beds only in 

 its red color. Its resemblance to the Trias he believed to be 

 accidental. 



The death of Win. E. Whitman was announced. 



August 10. 

 The President, Dr. Ruschenberger, in the chair. 

 Nineteen members present. 



August 17. 

 The President, Dr. Ruschenberger, in the chair. 

 Fifteen members present. 



August 24. 

 The President, Dr. Ruschenberger, in the chair. 

 Sixteen members present. 



August 31. 



The President, Dr. Ruschenberger, in the chair. 



Twenty-two members present. 



A paper entitled " On the Fossil Pvemains of Reptiles and Fishes 

 from Illinois," by E. D. Cope, was presented for publication. 



