COUNTRY NORTH OP THE ADIRONDACK^ 221 



In his recent report, 6 Prof. H. L. Fairchild has extended my investi- 

 gations beyond Watertown, but he gives only one observed measurement 

 (at Parishville) on the Iroquois Beach within a distance of 125 miles, 

 although the features of the country are so very complex. At this one 

 point we agree in recognizing the Iroquois plane, but not in its occur- 

 rence at Covey Hill, as will be shown. 



Teiangulation of Earth-movements recorded in the Beaches 



The location of the Iroquois Beach is now well known to a point east 

 of Watertown, and its elevation at several points suitable for triangula- 

 tion measurements is given in the following table; also the approximate 

 location of the same beach northeast of Watertown is indicated as far as 

 Covey Hill, at the northeast angle of the Adirondack plateau. East of 

 Parishville the general course of the beach is in a direct line approxi- 

 mately east-northeast, so that beyond this point its direction does not 

 permit of triangulation measurements. 



The elevation of the Iroquois Beach at or near places mentioned is 

 given in feet above sealevel, so that the earth-movements can be deter- 

 mined from them. When not otherwise stated, my elevations were deter- 

 mined by the spirit-level. 



Table of Elevations 



Hamilton 363 ( Spencer) . 



Scarboro 456 ( Spencer) m 



Colborne 502 ( Spencer) . 



Trenton 633 (Spencer) . 



Lewiston 384 ( Spencer) . 



Rochester, West of 435 (Fairchild). 



Sodus 456 (Fairchild) . 



Rome 445 ( railway ) . 



Herkimer 406 (railway) . 



Little Falls, Near 400 (barometer). 



Richland 563 (Gilbert). 



Adams Center 657 (Gilbert). 



Watertown 730 ( Spencer) . 



Stirling Bush, North of 770 (barometer). 



East Pitcairn 832 (barometer). 



South Edwards, gravel terrace 800 (barometer). 



Silver Creek, Near 865 (barometer). 



Parishville 903 (railway ) .« 



Malone, East of 930 (barometer). 



Covey Hill (upper lake) 915 (barometer, close reading). 



e New York State Museum Bulletin No. 158, 1912, pp. 32 -35, 



