DALY: GEOLOGY OF THE NORTHEAST COAST OF LABRADOR. 259 



tance of the width of the 

 Narrows, to lie at the 

 575-foot contour. No op- 

 portunity presented itself 

 for the ascent of this 

 southern ridge ; hence the 

 line at St. John's could not 

 be placed more accurately. 



The observations at the 

 Hudson's Bay Post in 

 Nachvak Bay gave as in- 

 disputable evidence of the 

 relatively low position of 

 the highest shore-line as 

 was obtained at the other 

 coast stations. The po- 

 sition of the boulder-limit 

 and the entire absence of 

 elevated beaches at heights 

 greater than 250 feet mean 

 that that elevation is very 

 close to the level of greatest 

 postglacial submergence. 



If the record of the 

 table be put in graphic form 

 (Figure 4) it becomes still 

 more evident that along 

 the eleven hundred miles 

 of coast the elevation has 

 been differential. The pro- 

 nounced warping of the 

 highest shore line is incom- 

 patible with the view that 

 changes in the position of 

 the level of the sea over 

 great stretches of the 

 earth's surface, are pro- 

 duced solely by independ- 

 ent vertical movements of 

 the surface of the ocean. 



.. ST. JOHNS 575' 



L_. C.ROUGE 505' 



BELLE ISLE 



ST. FRANCIS HARBOR 365' 



. GREADY 260' 



HAMILTON INLET 

 ■-ICE TICKLE 265' 



. POMIADLUK POINT 345' 

 .HOPEDALE 390' 



.QUIRK TICKLE 340' 

 . FORD HARBOR 290' 

 PORT MANVERS 285' 

 CUTTHROAT TICKLE 270' 

 MUGFORD TICKLE 265' 



HEBRON 260' 



I NACHVAK 250' 



Figure 4. — Curve showing the present warped 

 condition of the highest postglacial shore-line between 

 St. John's and Nachvak Bav. 



