i8 



NEW YORK STATE MUSEUM 



The region referred to, so far as its fossil faunas are concerned 

 is practically virgin field, and the work that has been done and is 

 now under way in view of detailed study has been undertaken 

 with the approbation of the official geologists of Canada. The 

 work promises well and it is believed will make a fruitful return 

 to geologic science. This line of investigation has been substan- 

 tially aided by volunteer contributions from equally interesting 

 and heretofore unexploited localities in northern Maine. It is 

 believed that the near future will enable us to present a some- 

 what detailed report upon the data that have thus been acquired. 



Guelph fauna. A year ago we issued a memoir on the Guelph 

 formation and fauna in New York. It was tKe exploitation of 

 a practically new member of the New York formations. During 

 the past year the operations of the Canadian power companies 

 at Niagara Falls laid bare large areas of the river bed and the 

 laying of the enormous 18 foot pipes of the Ontario Power Co. 

 required tremendous excavations into the bed rock. These 

 upper layers of the dolomites lying above the crest of the falls 

 and forming the reefs of the upper rapids have afforded us evi- 

 dences of the presence of the Guelph fauna which have not be- 

 fore been observed and are therefore recorded in this place. 



Geographic geology 



Hudson and Champlain valleys. Prof. J. B. Woodworth has 

 continued the investigations begun in a previous year upon prob- 

 lems relating to the determination of the postglacial high water 

 levels of the northern Hudson valley and the Lake Champlain 

 valley, the object of the work being to illustrate the mode and 

 direction of outflow and discharge of the glacial and postglacial 

 waters of that region and the manner of deposition of the ancient 

 shore lines and beaches. In pursuance of this work Professor 

 Woodworth entered the field in Clinton county in July, stopping 

 at Bellows Falls Vt. for the purpose of examining the terraces of 

 the Connecticut river as an aid to the understanding of similar 

 features in the Hudson valley and also at Brandon Vt. to inspect 

 the decomposed Tertiary and the older rocks in their relations 

 to the glacial drift. Examination was made of Trembleau moun- 

 tain near Port Kent and of the vicinity of Plattsburg where such 

 shore phenomena occur. Three weeks were spent in making a 

 detailed contour map of what, in this survey, has been denomi- 

 nated " Cobblestone hill," a washed ridge of boulders and cobbles 



