18S1.] ^•^^ 



ical, Geological, Zoological and Asiatic Societies, Nature and 

 the Cobden Club, at London; tlie Societies at Cambridge, 

 Falmouth., Leeds, Liverpool, and Bdinburg ; the Mass. Hist. 

 Society; Peabodj Museum; the American Antiquarian Society; 

 the American Journal of Science ; the American Journal of 

 Pharmacy ; the U. S. Department of Agriculture ; the ISTational 

 Museum at Mexico ; Mr. Eli K. Price, and Mr. F. Fraley. 



The death of Captain Carlile P. Patterson, Superintendent 

 of the Coast and Geodetic Surveys of the United States, 

 was announced by Mr. Fraley. 



Resolved, That Mr. Eobert Patterson be requested to prepare an obituary 

 notice of the late Mr, "William E. Dubois. 



Communications were received entitled : — - 



" Notes on the Coal Field Near Canon City ;" and " Notes 

 on the Quinnimont Coal Group in Mercer Co. W. V^a. and 

 Tazewell Co. Va. by John J. Stevenson, Professor of Geology 

 in the University of the City of New York." 



Professor Cope exhibited a recently discovered lower jaw 

 of Triisodon quiverensis from New Mexico, in an almost per- 

 fect condition, with four molars and two premolars of marsupial 

 type. Beneath the premolars are exhibited (by fracture) two 

 perfectly formed successional teeth of carnivorous type. He 

 explained the systematic importance of the fact. 



Mr. Lesley, remarked that he thought it had importance also in the 

 transcendental discussion of the development theory ; since it represented 

 the form-force of this individual creature as performing its functions of 

 bodily creation under ttie inspiration of two form-ideas or type-principles 

 at the same time and not in the succession of time. And if this be true of 

 an individual form-force, it supposes the same to be true of the form-force 

 of the world at large. 



If in a single jaw we see the process of realizing two distinct organic 

 types at the same moment — the alleged older type not producing the 

 alleged later type by natural generation ; nor even preparing for its ap- 

 pearance on the scene — and if we see the two types not sei^arated by any 

 interval of time, and not transcendentally transmuted one into the other 

 through intermediate gradations of type form — then, there is no necessity 

 for seeking any other cause for such intervals or graduations, when ap- 

 parent in tlie geological record, except the intelligence of the universal 

 form-force in nature, whatever that may be. 



In other words, no theory of natural selection can be used to account 



