764 
PROFESSOR 0. REYNOLDS ON CERTAIN DIMENSIONAL 
Table XIV.—Time of transpiration of equal volumes of air at different pressures 
through stucco plate No. 2. 
Initial 
pressure. 
Time of 
transpiration in 
seconds, 
July, 1878. 
Log of pressure. 
Log of time. 
inches. 
30T0 
54-5 
1-478 
1-7364 
29-95 
55 
1-476 
1-7404 
26-25 
58 
1-418 
D7634 
26-15 
60 
1-416 
1-7781 
22-95 
62 
1-36 
1-7924 
20-50 
65 
1-31 
1-8129 
19-90 
66 
1-30 
1-8195 
17*75 
68 
1-25 
1-8325 
15-40 
72 
1-19 
1-8573 
13-45 
75 
1-13 
1-8750 
11-60 
79 
1-06 
1-8976 
10-05 
82 
1-00 
1-9138 
8-75 
85 
•94 
1-9294 
5-90 
90 
•77 
1-9542 
5-35 
93 
■73 
1-9684 
5’20 
92 
■72 
1-9638 
4-75 
95 
•68 
1-9777 
4-50 
95 
•65 
1-9777 
3-90 
97 
•59 
1-9867 
3-85 
97 
•58 
1-9867 
3-40 
98 
•53 
1-9912 
2-95 
100 
•47 
2-0000 
2-50 
101 
■40 
2-0040 
*95 
102 
-98—1 
2-0128 
Table XV. 
—Time of transpiration of equal volumes of hydrogen at different pressures 
through stucco plate No. 2. 
Pressures before 
transpiration. 
Time of 
transpiration in 
seconds. 
Log of pressure. 
Log of time. 
inches. 
30-10 
19 
1-48 
1-2787 
26-30 
20 
1-42 
1-3010 
18-6 
21 
1-27 
1-3222 
735 
25 
0-87 
1-3979 
5"50 
26 
0-74 
1-4149 
4-15 
27 
0-61 
1-4313 
3 75 
28 
0-57 
1-4471 
1-35 
28-5 
0-13 
1-4540 
1-20 
28-5 
0-08 
L4540 
