5S2 
MESSRS. GIBSON AND BARCLAY ON MEASUREMENTS OF 
distance between the plates due to the expansion of the paraffine that no change of spe- 
cific inductive capacity can be inferred from it. 
The following further measurements of the Cylindrical Paraffine Condenser were now 
made, the zero-value of the sliding condenser being still equal to 1384 scale-divisions. 
Date. 
Temperature. 
Condenser Scale. 
Value. 
Outside. 
Inside. 
Mean. 
a. 
d 
Feb. 10, 1870 
GO 
1 
- g-4 
-12-1 
282 
294 
1 
1678 
Feb. 11, 1870 
- 0-2 
280 
292 
1676 
5-4 
4-85 
5-125 
307 
295 
1679 
Feb. 15, 1870 
-15-4 
- 4-65 
-10-025 
306 
294 
1678 
Feb. 15, 1870 
-14-1 
-10-2 
-12-15 
305 
293 
1677 
T*Vh. 15, 1870 
- 11*5 
-11-25 
-11-375 
285 
297 
1681 
Feb. 15, 1870 
- 10-25 
-11-125 
-10-79 
310 
298 
1682 
Feb. 16, 1870 
0-5 
0-425 
0-46 
309 
297 
1681 
Feb 17, 1870 
5-2 
4-37 
4-78 
285 
297 
1681 
Feb. 18, 1870 
6-5 
5-8 
6-15 
284 
296 
1680 
Feb. 18, 1870 
6-5 
5-8 
6-1 5 
308 
296 
1680 
Feb. 18, 1870 
16-6 
10-8 
13-7 
305 
293 
1677 
Feb. 23, 1870 
18-7 
18-45 
18-57 
302 
290 
1674 
April 6, 1870 
12-6 
309 
297 
1681 
All the values obtained for this condenser at different temperatures are shown in the 
following Table arranged in the order of temperature : — 
Date. 
Temperature. 
Value. 
Feb. 15, 1870 ......... 
-12-15 
1677 
Feb. 10, 1870 
— 12-1 
1678 
Feb. 15, 1870 
— 11-375 
1681 
Feb. 15, 1870 
-10-79 
1682 
Feb. 15, 1870 
-10-025 
1678 
Feb. 1 1, 1870 
— 0-2 
167 6 
Feb. 16 , 1870 
0-46 
1681 
Dec. 29, 1869 
2-7 
1694 
Feb. 17, 1870 
4-78 
1681 
Feb. 15, 1870 
5-125 
1679 
Dec. 30, 1869 
5-7 
1691 
Feb. 18, 1870 
6-15 
1680 
Feb. 18, 1870 
6-15 
1680 
Jan. 11, 1870 
7-1 
1691 
Dec. 22, 1 869 
7-5 
1702 
Jan, 8, 1870 .... 
8-2 
1693 
'Jan. 6,1870 ......... 
10-35 
1687 
April 6, 1870 
12-6 
1681 
Jan. 6, 1870 
13 
1693 
Feb. 18. 1870 
13-7 
1677 
Dec. 30, 1869 ......... 
1 5-55 
1689 
Jan. 8, 1870 
16-3 
1690 
Jan. 8, 1870 
16-3 
1690 
Dec. 22, 1 869 
17-6 
1702 
Feb. 23, 1870 
18-57 
1674 
Jan. 6, 1870 ......... 
19-8 
1685 
Jan- 7, 1870 
20-85 
1689 
Jan, 12, 1870 
23-65 
1688 
Tan. 12, 1870 
24-35 
1637 
