2L(u' GJacler RrgioiK AJashi. — ('ii!<Jiln(f. 219 
points of interest in this valle}', requiring a careful examination 
for their elucidation. 
GLACIAL DEPOSITS. 
Description. — On each side of Muir inlet a deposit of sand and 
gravel of varying width lies between the water and the mountains 
— see map. The deposit on the western side is more extensive. 
It has a width varying from half a mile to a mile, which is great- 
est opposite Dying glacier valle}' and diminishes rapidly to the 
south, having a length of about five miles. That on the eastern 
side has a width of about half a mile for the first mile of its 
length and then diminishes to a point, dying out about three 
miles south of the ice front. For a considerable part of their ex- 
tent these deposits rise quite abruptly fromnear the water "s edge in 
steep cliffs with an average hight of one hundred feet. ' The 
faces have been chiseled by the rains into veiy picturesque shapes. 
They have a talus slope at their l^ase, and are separated from the 
water Vjy a narrow sand beach. A channel has been cut in each 
of these deposits by the sub-glacial streams that issue, one from 
each end of the ice front. The sides of these channels are marked 
by rough terraces marking occasional local flood plains formed 
by the streams as they rapidly cut out their channels. These 
terraces rise rapidly in the direction of the ice and then die out, 
an effect produced by the retreat of the ice and the consequent 
shifting of the source of the stream. These deposits possess 
firmness to a surprising degree, it being in places extremely 
difficult to make any impression on them with the foot. But 
their lack of C(^nsolidation renders them, especially when water- 
soaked, an easy prey to running water. They were deposited by 
swift currents. The material is all coarse, alternating beds of 
gravel and sand, tlie gravel largely predominating, and with little 
or no admixture of clay. Rapid alternations of horizontal and 
cross bedding characterize them. A consideraVjle number of the 
pebbles in the gravel are derived from the eruptive rocks far to 
the north. They have their edges rounded but are much more 
angular than are stones which luive suffered attrition in water for 
any considerable length of time. They have rather the aspect of 
somewhat water- wf)rn glacial pebbles. 
The altitude reached by these deposits increases as the nioiiul- 
ain sides are approached, the}- having there an elevation of 40(> 
