QUANTITATIVE OBSERVATIONS 59 



not proving entire absence of change, is believed to demonstrate very 

 slight, if any, change. 



CHANGES OF LEVEL IN THE SOUTH ARM OF RUSSELL FIORD 



At cape Enchantment there is evidently an uplift of less than 2 feet, 

 and several miles south of this, opposite Seal bay, of 3 feet 3 inches. 

 Between these two points there is a succession of slightly elevated beaches 

 and fans; but on the east side of the fiord, while a slight uplift is indi- 

 cated, we could got no definite measurement until a point was reached 2 or 

 3 miles south of Seal bay. Conditions along this eastern coast are perfect 

 for the preservation of evidence of uplift, and our failure to find definite 

 evidence convinces us that the uplift here was at best very slight. Quite 

 abruptly, however, just north of Eussell cove, a wave-cut bench rises, and 

 on it we found dead barnacles 4 feet 10 inches above the highest living 

 ones. South of this the bench slowly rises, reaching an elevation of 

 9 or 10 feet on the west side and 7 or 8 feet on the east side of the fiord 

 (plate 14, figure 1). At the very head of the inlet, in the fist-shaped 

 area in the foreland, there is a change in a very short distance on both 

 sides of the bay from an uplift of 7 feet 4 inches to a depression (plate 18, 

 figure 2). 



Interpretation of Observations 

 in general 



Our observations lead us to the conclusion that here, in a non-volcanic 

 region, the land is still rising. Moreover, there is definite evidence that 

 earlier movements have preceded that of 1899. How widespread the 

 effects of this last movement were on the Pacific coast is not yet known ; 

 but the destruction known to have occurred in September, 1899, at the 

 front of the Muir glacier, 140 miles away, suggests the possibility of its 

 extension this far, and observations in that region will be awaited with 

 interest. At Dundas bay, near the entrance to Glacier bay, we landed 

 for a few hours, but found no evidence of change of level ; and there was 

 none at Sitka. On our way down the Inside passage we looked for evi- 

 dence of change of level, but without success, excepting in the narrow 

 passage just north of Ketchikan, several hundred miles farther south- 

 east, where there has been a recent uplift of unknown date and amount, 

 the evidence of which is visible from the steamer. 



In the region of our detailed studies it is evident that the uplift was 

 differential and that the movements were complex, resulting in a distinct 

 deformation of the coastline and bordering land. The exact nature of 



