544* 
Mr. Gompertz on the nature of the function 
Add the logarithm of accommodated ratios, as given in the 
Table VI. of all the lives but one in question, together, and 
see which of those rates of interest it nearest agrees with, 
and use that to calculate the life left, and proceed so for 
every life ; thus for" ^ 3 Q> 4 ° ; to find the rate of interest for 
SO, I observe that R= T.9899 agrees nearest with 6 per cent, 
in the little table, and R^=T. 99265 agrees nearest with 5 per 
cent., I therefore take 6 per cent, for the age 30, and for the 
other I take 5 per cent. ; proceed thus : 
Example 5. 
R if calculated at 6 per cent. 
30 ^ 
*.99316 
R per table 
40*^ 
1.98991 
A I,05“* . . . =: 
T.98716 
1. 97023 
1.14558 
Proportionate parts 
.00327 
To which logarithm . 
00 
00 
The N° corresponding is 
14.088 
Instead of . 
14.449 
Example 6. 
1 l40> SO 
R at 6 per cent. . . T.99060 
- or 
R at 6 per cent. . . i.gao$z 
50 1.98716 
1. 96408 
T.05336 
.00102 
1.06438 
1 1.598 
Example 7. 
\ |5o, 60 
R at 8 per cent. . 
50 
R at 6 per cent. . 
60 
X i,o3“i . • • • 
Instead of 
= 1-98759 
= *.97599 
— T.98716 
*•95074 
•9*357 
.00687 
.92044 
.8318 
. .8729 
11.954 
which log. corresponds . 
instead of . • • 
