i6 



NEW YORK STATE MUSEUM 



of these pertaining to the St Lawrence region being brought together 

 into one bulletin and under one title, '* Geology of the Thousand 

 Islands Region." The map and report on the Poughkeepsie quad- 

 rangle have also been issued. There has also appeared a special 

 report which has proved of much interest to engineers as well as to 

 geologists and the general public, as it deals with the earth structures 

 revealed in the operations of the New York City Board of Water 

 Supply. This report is entitled, " Geologic Features and Problems 

 of the New York City (Catskill) Aqueduct." 



In regard to actual work in the field, the progress made may be 

 summarized under these regional headings : 



Central and western New York. The areal work in this part 

 of the State has progressed with reasonable celerity. The maps of 

 the following quadrangles have been completed during the year : 

 Dunkirk, Cherry Creek, Eden, Silver Creek, and Westfield, all in 

 the Lake Erie region. Preliminary work has been carried into the 

 Bath quadrangle, and field work has been completed on the Brock- 

 port, Hamlin, Albion and Oak Orchard quadrangles. 



For this entire western New York region the present condition of 

 the areal survey for the geologic map may be thus summarized. 



Quadrangles published : 







Auburn 



Honeoye 



Penn Yan 



Buffalo 



Naples 



Portage 



Canandaigua 



Nunda 



Ttilly 



Elmira 



Clean 



Watkins 



Genoa 



Ontario. Beach 



Way land 



Hammondsport 



Ovid 





Quadrangles reported: 







Attica 



-71 



Eden 



Batavia 





Phelps 



Caledonia 





Silver Creek 



Depew 







Quadrangles mapped: 







Albion 





Hamlin 



Brockport 





Oak Orchard 



Cherry Creek 





Westfield 



Dunkirk 







Quadrangles begun : 







Bath 



■ 



Medina 



Eastern New York. Last year I recorded the progress made 

 in the study of the region involving the Saratoga and Schuylerville 

 quadrangles. The report on this area is not yet in readiness for 

 issue but so far as present problems go, it is practically completed. 



