Introduction 



The Cornell Summer School of Geology, under the direc- 

 tion of Prof. G. D. Harris, had, as one of its objects, the 

 correlation, if possible, of the Calciferous of the Mohawk 

 Valley with the divisions of the Lake Champlain Calcifer- 

 ous, as determined by Professors E. Brainard and H. M. 

 Seely*. For this purpose the type localities of Shoreham, Vt., 

 Ft. Ticonderoga, N. Y. , and others along Lake Champlain were 

 visited. After an examination of the type sedlions the party 

 studied the Calciferous in the Mohavi^k Valley. Several outcrops 

 of this stage on the route were examined. It was while doing 

 this work that the extremely fossiliferous locality near Ft. Hunter 

 was discovered, as well as a fossiliferous stratum near the top of 

 the hill south oflLittle Falls, N. Y. Although the party did not 

 succeed in correlating the divisions of the Lake Champlain Cal- 

 ciferous with those of the Mohawk Valley, the discovery of these 

 two outcrops in a region which has been considered so poor in 

 fossils justified the expenditure of time and effort. 



Through the kindness of Prof. G. D. Harris, all of the ma- 

 terial collected at the Ft. Hunter locality was turned over to the 

 writer for study, and every facility given for carrying on the 

 work. 



Thanks are due Prof. C. E. Beecher, to whom the identifica- 

 tions of the trilobites were referred; to the students of the sum- 

 mer school, and especially to Prof. Harris, who figured the fossils 

 and with A. C. Veatch prepared the topographic sheet and ?eclion, 

 and through whose kindness this paper was made possible. 



Am. Mus. Nat. His. Bull., vol. 3, pp. 1-23, 1890-91. 



