564 
MR. W. C. D. WHETHAM ON THE ALLEGED SLIPPING 
Tube No. III. 
Unsilverecl. 
Silvered. 
Temperature. 
Time of flovY. 
Temperature. 
Time of flow. 
20-0 
1 
2-2 
26-9 
1 
1-8 
20-1 
1 
2-0 
20-9 
1 
1-3 
20-1 
1 
2-2 
20-95 
1 
]-2 
20-2 
1 
2-0 
21-0 
1 
1-8 
20-2 
1 
1-8 
21-0 
1 
1-4 
20-3 
1 
1-7 
21-0 
1 
1-5 
20-4 
1 
1-7 
21-0 
1 
0-9 
20-5 
1 
1-6 
21-05 
1 
1-3 
20-5 
1 
1-7 
21-05 
1 
1-0 
20-5 
1 
1-5 
21-05 
1 
0-8 
20-5 
1 
1-6 
20-6 
1 
1-5 
20-3 
1 
1-79 
21-0 
1 
1-37 
Thickness of film = ’0000237 cm. 
Radius of tube = ’0776 cm. 
Change in 7 ’^ = O '12 per cent. 
Temperature correction = 7 X 2’22 = 1’55 per cent. 
Total correction 1'55 — ’12 = 1’43 per cent. = 0'87 second. 
Time for glass tube, corrected = I' 0"'92'| 
,, observed for tube, silvered = 1 ' 1"'37 J 
A change of + 0'7 per cent. 
A rather smaller tube was then used, r = *0642. 
Unsilveied. 
Silvered. 
Temperature. 
Time. 
Temperature. 
Time. 
0 
/ 
0 
1 
// 
1 
22-0 
2 
8-4 
1 
20-2 
2 
13-0 
2 
22-0 
2 
8-2 
2 
20-2 
2 
13-1 
3 
22-05 
2 
8-4 
3 
20-2 
2 
12-9 
4 
22-05 
2 
8-3 
4 
20-2 
2 
13-4 
5 
2 - 2-1 
2 
8-4 
5 
20-25 
2 
13-0 
6 
22-15 
2 
8-0 
6 
20-3 
2 
13-0 
7 
22-2 
2 
8-0 
7 
20-4 
2 
12-8 
8 
22-2 
2 
8-2 
8 
20-4 
2 
12-6 
9 
22-2 
2 
8-0 
9 
20-45 
2 
12-4 
10 
22-25 
2 
7-8 
10 
20-5 
2 
12-4 
11 
20-5 
2 
12-8 
12 
20-5 
2 
12-4 
Means 
22-12 
2 
8-17 
Means 
20-34 
2 
12-82 
I 
