REPORT OF THE DIRECTOR I9O4 



Clinton are now regarded as of Salina age. The study of the 

 Shawangunk grit throws a shadow of doubt upon the time-hon- 

 ored correlation of these beds with the Oneida conglomerate and 

 it will be a matter for investigation whether they may not, in 

 part at least, represent sedimentation equivalent to a later period, 

 possibly of the date of the Salina. 



Stratigraphy of the Watertown region. Some preliminary 

 work has been done along the region of the Black river in study 

 of the development and subdivision of the Trenton, Black River 

 and Lowville limestones. This work was done by Mr M. F. 

 Goldman under the general supervision of Professor Grabau. 

 Mr Goldman's work is based chiefly upon the collections of fos- 

 sils made by him and these will be determined with a view to 

 carrying out the stratigraphic subdivisions as far as is practica- 

 ble. The investigations have indicated that the contact of the 

 Lowville limestone with the crystalline rocks is an overlap of 

 more ancient sediments transgressing upon the crystallines. 



Correlation studies 



Early Devonic of eastern America. The rapid growth of 

 geologic knowledge has long made it evident that problems 

 arising from and distinctly pertaining to the geology of New 

 York can not be satisfactorily solved from the evidence pre- 

 sented within our political boundaries only. Some of the most 

 striking developments of New York geology are to be found out- 

 side these boundaries, and we have, as occasion required, sought 

 this information where it is best presented. The Paleontologist 

 has devoted much time and thought to questions relating to the 

 origin of the ancient faunas of New York, their point of ingress 

 into the State and their direction of departure from it, problems 

 which lead to the reconstruction of our ancient geography and 

 the determination of the waterways or marine channels through 

 which life circulated freely during the deposition of the New 

 York sediments. In pursuance of the objects of these studies 

 collections have been made and field work done in the extension 

 of the New York rocks to the northeast, into the Province of 

 Quebec. Reference has been previously made to these studies 

 and we have now brought together from these eastern manifes- 

 tations of New York rocks extensive and unique exemplifica- 

 tions of our New York early Devonic faunas. 



