866 
DE. EAEE OX THE COXSTEUCTIOX OE LIFE-TABLES. 
Table B. — The several values of on which the Life-Table of Healthy Districts is 
based: also the corresponding values of^^ and {1—p^). 
Age 
Xpn 
=logarithms of the probability of living 
one year after the age x. 
px 
= probability of living a year. 
(1 -pP) 
= probability of dying in a year. 
Males. 
Females. 
Males. 
Females. 
Males. 
Females. 
0 
r'9480215 
1-9577796 
-88720 
•90736 
•11280 
•09264 
1 
1-9844929 
1-9859276 
-96492 
•96812 
•03508 
•03188 
2 
1-9904341 
1-9904679 
-97821 
•97829 
•02179 
•02171 
3 
1-9932422 
1-9932928 
-98456 
•98467 
•01544 
•01533 
7 
1-9970729 
1-9969512 
-99328 
•99300 
0 
0 
05 
•00700 
12 
1-9984539 
1-9980197 
-99645 
•99545 
•00355 
•00455 
20 
1-9969724 
1-9966528 
-99305 
•99232 
•00695 
•00768 
30 
1-9964260 
1-9960967 
-99180 
•99105 
•00820 
•00895 
40 
1-9959051 
1-9956263 
-99062 
•98998 
•00938 
•01002 
50 
1-9943048 
1-9946669 
•98697 
•98780 
•01303 
•01220 
60 
1-9895894 
1-9902049 
-97631 
•97770 
•02369 
•02230 
70 
1-9751357 
1-9773538 
-94436 
•94919 
•05564 
•05081 
80 
1-9420680 
1-9463182 
-87512 
•88373 
•12488 
•11627 i 
90 
1-8747315 
1-8809176 
•74943 
•76018 
•25057 
•23982 
J^ote. — Age X is in this Table the precise age. Age 12 is applied fi-equently 
to all persons of the age of 12 and under the age of 13; but in this Table it apphes 
only to persons of the precise age of 12 years, neither more nor less. The was in 
The X^i 2 , deduced from this formula, is 
for males!. -9983497, and for females 1-9979153 ; which may be regarded either as 
the constant or the mean values of Xj),i 5 and X^i^ ; but as these are the 
terminations of an ascending and a descending series, it is probable, and qirite in con- 
formity with other observations, that one, two, or more of these values will exceed the 
mean value. The logarithms of^j 2 adopted are given above; and the two arithmetical 
means of the five logarithms, X^p,,, Xp,^, Xpig, and X^,^, resulting Lorn the interpola- 
tion, are 1-9983688 for males, and 1-9979436 for females. 
The values of X^ 2 o? • • • • are derived from the formula ^/^—lO l 
