224 
MESSRS. STANTON AND PANNELL ON SIMILARITY OF MOTION, ETC. 
Table III.—Experiments with Air (continued). 
Mean velocity, 
centimetres per second. 
(®0 
Surface friction, dynes 
per square centimetre. 
(R.) 
Value of — 10 2 . 
pv 2 
Value of - 10- 3 . 
V 
Pipe No. 18. 
Diameter 0‘361 cm. 
Temperature 1G°'5 ( 
1 (continued). 
1080 
4-66 
0-326 
2-63 
1270 
6-84 
0-344 
3-10 
1310 
7-94 
0-376 
3-19 
1310 
10-12 
0-477 
3-20 
2390 
32-1 
0-469 
5-95 
2710 
39-8 
0-454 
6-80 
3040 
48-7 
0-445 
7-67 
3370 
56-9 
0-421 
8-55 
2020 
23-5 
0-476 
5-01 
1580 
15-6 
0-512 
3-91 
2050 
24-4 
0-480 
5-25 
1370 
12-2 
0-527 
3-39 
1740 
23-0 
0-500 
4-30 
1260 
10-3 
0-534 
3-10 
Pipe No. 12a. Diameter 12‘G2 cm. Temperature 
16°'5 C. 
2183 
11-90 
0-205 
185 
2692 
16-60 
0-188 
228 
3172 
22-15 
0-180 
269 
3790 
30-65 
0-175 
321 
4025 
34-55 
0-175 
341 
1342 
4-84 
0-220 
114 
1004 
2-92 
0-238 
85 
Table IV. — Experiments with Thick Oil. 
Diameter of Pipe 10‘13 cm. 
Mean 
velocity, 
centimetres 
per 
second. 
Tempera¬ 
ture, 
C. 
Density. 
Value of 
P v 2 . 
Value of 
V. 
Surface 
friction, 
dynes per 
square 
centimetre. 
R. 
T> 
-A 10 2 . 
pv 2 
Value of 
vd 
V 
45-9 
39-5 
0-928 
1955 
3 
79 
122-6 
6-27 
123 
10-25 
37-7 
0-929 
975 
4 
29 
30-9 
31-7 
24 
35-9 
37-2 
0-929 
1195 
4 
41 
109-8 
9-18 
82-5 
54-9 
36-8 
0-930 
2800 
4 
58 
177-0 
6-33 
122-0 
8-02 
36-4 
0-930 
59-7 
4 
76 
27-2 
45-6 
17-0 
5-12 
35-9 
0-930 
24-4 
4 
99 
17-5 
70-0 
10-4 
57-4 
35-9 
0-930 
3060 
4 
99 
205-0 
6-70 
117 
30-5 
35-6 
0-930 
865 
5 
11 
110-8 
12-81 
60-6 
5-46 
35-9 
0-930 
27-7 
4 
99 
19-5 
70-4 
11-1 
5-80 
34-8 
0-931 
31-2 
5 
46 
22-8 
73-1 
10-8 
55-80 
34-5 
0-931 
2900 
5 
57 
219-3 
7-57 
101-5 
8 JUN. 1914 
