i8 



NEW YORK STATE MUSEUM 



On the following topographic sheets work has been recorded and 

 is .more or less advanced toward completion. 



Auburn 



Geneva 



Plattsburg 



Ausable 



Genoa 



Richfield 



Berne 



Greene 



Rochester 



Buffalo 



Hammondsport 



Schuylerville 



Cambridge 



Hoosick 



Silver Creek 



Cazenovia 



Moravia 



Skaneateles 



Cherry Creek 



Mt Morris 



.Syracuse 



Chittenango 



Norwich 



Troy 



Cohoes 



Ovid 



Wayland 



Cortland 



Penn Yan 



Westfield 



Coventry 



Phelps 



Whitehall 



Dunkirk 



Pitcher 





Miscellaneous 



Fossil trails at Bidwell's crossing. In my last report Prof. J. B. 

 Woodworth gave a brief illustrated account of certain remarkable 

 trails on the surface of the Potsdam sandstone exposed on the farm 

 of B. H. Palmer at Bidwell's crossing near Sciota, Clinton co. These 

 trails are of a type which have frequently before been found in Pots- 

 dam strata and were termed by Sir William Logan, Climactichnites — 

 the ladder-shaped track — from the crossbars which traverse it. Some 

 years ago the State Museum undertook to remove a large slab of 

 these trails from a quarry at Port Henry but the sandstone layer 

 bearing them came out in such a fragmentary condition that the 

 pieces could not be matched together and the undertaking was a 

 qualified success. The exposure at Bidwell's crossing was of extra- 

 ordinary interest in several respects. Over an area measuring about 

 30 feet in length by 10 feet in width and flush with the soil surface 

 of a partly cleared brush lot lay a series of long trails averaging 5 

 inches in width and some of them 10 to 15 feet in length, the princi- 

 pal trails having a general parallelism to the length of the exposure, 

 there being not less than 25 distinct trails visible on the slab. Each 

 of these long serpentlike trails, when complete, ends in a distinct oval 

 impression which has been considered by Professor Woodworth as 

 the mark made by the body of the animal at rest. Such terminal 



