NATURAL SCIENCES OF PHILADELPHIA. 363 



The following paper was presented for publication : " Descriptions of 

 Reptiles from Tropical America and Asia, by E. D. Cope." 

 And was referred to a Committee. 



September 18 th. 

 Mr. Lea, President, in the Chair. 



Thirty-six members present. 



The following papers were presented for publication: ''Descriptions 

 of new species of Crinoidea from the Carboniferous rocks of Illinois and 

 other Western States, by F. B. Meek and A. H. Worthen." 



"On Milne-Edwards' Synonymy of Xiphigor^ia setacea, by G 

 H. Horn." 



"Descriptions of new Cretaceous Corals from New Jersey, by Wrn 

 M. Gabb and G. H. Horn." 



" Observations upon the form of the Occiput in the various races of 

 Men, by J. Aitken Meigs." 



" Descriptions of New Birds of Western Africa in the Museum of the 

 Academy of Natural Sciences, by John Cassin." 



" Catalogue of Birds from the Island of St. Thomas, West ladies 

 collected and presented to the Academy of Natural Sciences by Mr. 

 Robert Swift, with notes, by John Cassin." 



And were referred to Committees. 



Mr. Lea read an extract from a letter from Bishop Elliott, of Georgia, dated 

 University Place, Tennessee, Aug. 28th, 1860, informing him that he had found 

 numerous living specimens of Helix Cumberlandiana, which he had trans- 

 mitted to him. Mr. Lea stated that they had been received by him, and were 

 very interesting, from their having been found near to and at the original 

 locality from which the specimen first described had been taken by Dr. Troost. 



Mr. Lesley stated briefly the results of some observations he made in the 

 White Mountains of New Hampshire during the summer. His visits to this 

 region in 1849, and subsequent years, had laid the foundation for a growing 

 conviction that the range of the White Mountains would prove to be synclinal 

 instead of anticlinal, and therefore of probably Devonian age. A section which 

 he made in 1857, along the Grand Trunk R. R., showed him the synclinal 

 structure, with comparatively low dips, and at least two main anticlinal 

 divisions. The profile in the Franconia notch is evidently a cliff outcrop of a 

 horizontal plate. The newly opened Greely Mountain House in Waterville in 

 a cul-de-sac valley at the head of Mad River, and six or eight miles in an east 

 line through the woods from the Flume House, is surrounded by bold outcrops 

 of nearly horizontal massive plates of granite. Ascending Mad River from 

 Campton, the traveller has the White-face range on his right, with apparent 

 gentle dips to the north-west. But on his left he has the Welsh mountain 

 range and Mount Osceola, with an unmistakeable and universal dip, never 

 over 15, and much of it under 10, to the south-east, which can be studied 

 for at least seven miles, north-east and south-east. Turning to the left and 

 ascending Mount Osceola (which Mr. Lesley found by barometer to be over 

 2600 above the Greely House, and therefore not much lower than Mount 

 Lafayette), the bridle path mounts over successive outcrop edges of perfectly 

 horizontal plates of granite, as evidently and regularly bedded as any of the 

 sandstone masses of the Alleghanies, the bed planes not being at all disguised 

 I860.] 



