30 M. W. Siemens on a new reproducible Standard 
And consequently the respective correction factors were-— 
| 1: 2, 3. 4. “d 6. 
| 1-:00225 | 1-00055]| 1-00282 | 1-000201] 1-000289] 1-000906 
Table IT. 
al, 2. 3. | 4, 5. 6. 
13-208 | 27-1915| 24-3825| 62-368 | 69-802 | 11-767 
13°210 | 27:1900) 24°3830| 62-366 | 69-796 | 11-768 
13:209 | 27-1915) 24-3840! 62-357 | 69°803 | 11:767 
13-209 | 27-1920) 24-3833 
at at at at at at 
Toes RE 4 RR 1S sb 1S B: 14°°7R) 15°29 
i | ee | | 
Weight in grammes at 0°. 
1. 2. 3. 4, ‘5. 6. 
13-2491 | 27:277 | 24457 | 62:774 70-057 | 11:808 
If in the formula (2) for the resistance, found above, viz. 
leh gt 
Ihrer LM ot Va 
& 3 ; 
we substitute the values of G (in milligrammes) and the correc- 
tion factor as determined by these Tables, and if we take for the 
specific gravity of mercury at 0° : 
C= 1B bod: 
and for the mean length of all the tubes 
Z=1000 millims., 
then we shall have the resistance of the tubes expressed in terms 
of the resistance of a cube of mercury 1 millim. each way. 
Table IIL. gives the values of W so calculated. 
W= 
Table IIT. 
1. 2. 3. 4, 5. 6. 
1025-54 | 497-28 | 555-87 | 216-01 | 193-56 | 1148-9 
