184 PROFESSOR FORBES ON THE VISCOUS THEORY OF GLACIER MOTION. 
Table III. 
First Station on the Glacier des Bossons. Some way above the Plateau, where the 
glacier is usually crossed ; on the west side, and near the moraine. 
Space moved over in 
English feet and inches. 
Daily 
motion. 
From 1844 
To 1844. 
feet. 
inches. 
inches. 
November. . 
20. 
Noon 
December . . 
4. 
3 P.M. 
20 
4 
17-3 
1845. 
December . . 
4. 
3 P.M 
January . . . . 
7. 
1 P.M. 
44 
11 
15-9 
January. . . . 
7- 
1 P.M 
February . . 
14. 
4 P.M. 
46 
9 
13-6 
February . . 
17. 
4 P.M 
March .... 
17- 
Noon. 
35 
10 
15-4 
March .... 
17- 
Noon 
April 
16. 
5 P.M. 
32 
7 
12-9 
April 
16. 
5 P.M 
May 
17- 
3 P.M. 
60 
0 
23-3 
May 
17. 
3 P.M 
May 
31. 
8 A.M. 
49 
0 
42-9 
May 
31. 
8 A.M 
June 
19. 
10 A.M. 
54 
2 
34-1 
June 
19. 
10 A. M 
July 
4. 
5 P.M. 
53 
8 
42-1 
July 
4. 
5 P.M 
July 
21. 
2 P.M. 
43 
1 
30-6 
July 
21. 
2 P.M 
August .... 
7- 
3 P.M. 
40 
10 
28-8 
August .... 
7- 
3 P.M. .... 
October. . . . 
6. 
Noon. 
103 
0 
20-6 
October. . . . 
6. 
Noon 
November . . 
10. 
2 P.M. 
56 
8 
19-4 
November. . 
10. 
2 P.M 
November . . 
22. 
1 1 A.M. 
22 
5 
22-6 
Table IV. 
Second Station on the Glacier des Bossons. Near the lowest extremity of the gla- 
cier, where free from the moraine, on the western side. 
Space moved over in 
English feet and inches. 
Daily 
motion. 
From 1844 
To 1844. 
feet. 
inches. 
inches. 
October. . . . 
2. 
2 P.M 
October .... 
13. 
4 P.M. 
12 
11 
14-0 
October. . . . 
13. 
4 P.M 
October. . . . 
31. 
10 A.M. 
25 
1 
17-0 
November . . 
20. 
1 P.M 
December . . 
4. 
2 P.M. 
15 
4 
13-1 
1845. 
December . . 
4. 
2 P.M 
January .... 
7. 
3 P.M. 
36 
11 
13-0 
1845. 
January. . . . 
7. 
3 P.M 
February . . 
19- 
1 P.M. 
43 
1 
12-0 
February . . 
19. 
1 P.M 
March .... 
17- 
1 P.M. 
27 
10 
12-8 
March .... 
17- 
1 P.M 
April 
16. 
6 P.M. 
25 
8 
10*2 
April 
16. 
6 P.M 
May 
17- 
4 P.M. 
49 
11 
19-4 
May 
17. 
4 P.M 
May 
31. 
9 A.M. 
34 
6 
30-2 
May 
31. 
9 A.M 
June 
19. 
1 1 A.M. 
44 
2 
27*8 
June 
19. 
11 A.M 
July 
4. 
6 P.M. 
41 
2 
32-3 
July 
4. 
6 P.M 
July 
21. 
11 A.M. 
37 
3 
26-4 
July 
21. 
11 A.M.* 
August .... 
7- 
4 P.M. 
30 
3 
21*4 
August .... 
7. 
4 P.M 
October .... 
6. 
2 P.M. 
82 
7 
16-5 
October. . . . 
6. 
2 P.M 
November . . 
10. 
4 P.M. 
17 
3 
5-9 
November. . 
10. 
4 P.M 
November . . 
22. 
1 P.M. 
7 
2 
7-2 
These four sets of observations are projected in Plate XI. fig. 1, where the four 
lower zigzag curves represent the gradation of diurnal velocity by periods, according 
to the method adopted in projecting my own observations in my Travels, p. 141. The 
* Marked 4 p.m., perhaps by mistake, but computed on that supposition. 
