tsch Glacier, Line B.

No. of Stake. Hourly Motion.

1 0.05 inch.

2 0.14 inch.

3 0.24 inch.

4 0.32 inch.

5 0-41 inch.

6 0.44 inch.

7 0.44 inch.

8 0.45 inch.

9 0.43 inch.

10 0.44 inch.

11 0.44 inch.

The first stake of this line was quite close to the edge of the
glacier, and the ice was thin at the place, hence its slow motion.
Crevasses prevented us from carrying the line sufficiently far across
to render the retardation of the further side of the glacier fully
evident.

Morteratsch Glacier, Line C.

No. of Stake Hourly Motion.

1 0.05 inch.

2 0.09 inch.

3 0.18 inch.

4 0.20 inch.

5 0.25 inch.

6 0.27 inch.

7 0.27 inch.

8 0.30 inch.

9 0.21 inch.

10 0.20 inch.

11 0.16 inch.

Comparing the three lines together, it will be observed that the
velocity diminishes as we descend the glacier. In 100 hours the
maximum motion of three lines respectively is as follows:

Maximum Motion in 100 hours.

Line A 56 inches

Line B 45 inches.

Line C 30 inches.

This deportment explains an appearance which must strike every
observer who looks upon the Morteratsch from the Piz Languard, or from
the new Bernina Road. A medial moraine runs along the glacier,
commencing as a narrow streak, but towards the end the moraine
extending in width, until finally it quite covers the terminal portion
of the glacier. The cause of this is revealed by the foregoing
measurements, which prove that a stone on the moraine where it is
crossed by the line A approaches a second stone on the moraine where
it is crossed by the line C with a velocity of twenty-six inches per
one hundred hours. The moraine is in a state of longitudinal
compression. Its materials are more and more squeezed together, and
they must consequently move laterally and render the moraine at the
terminal portion of the glacier wider than above.

The motion of the Morteratsch glacier, then, diminishes as we descend.
The maximum motion of the third line is thirty inches in one hundred
hours, or seven inches a day--a very slow motion; and had