116 
Proceedings of the Royal Society 
parison is made of the rates of mortality of male lives according to 
the three English life tables and that derived from the population 
of Scotland, already referred to, with the mortality of the selected 
healthy assured males of the ten Scottish offices. A very general 
view of the benefits of selection is thus obtained. The assurances 
on healthy male lives are divided into two classes — assurances with 
profits, and assurances without profits ; the mortality of the u with 
profit ” class exhibiting results in a highly favourable direction, and 
of the “ without profit” class in an ^favourable direction — the one 
being 10 per cent, and 7 per cent, less than the Carlisle and Actuaries’ 
tables respectively, and the other about 12 and 13 per cent, greater. 
The foregoing comparisons of the actual and computed number 
of deaths at each year of life are reclassified in another form, so as 
to exhibit the actual and computed deaths out of the entrants at each 
age , and thus show how far one aggregate table of mortality expresses 
or represents the experience of its several parts or sections. These 
comparisons are made with the Carlisle and Actuaries’ tables, from 
which it will be seen that neither table accurately measures the 
experience of sections of entrants. Young entrants exhibit a greater 
mortality than estimated by either table. There is, at same time, 
exhibited a similar comparison of the experience of the ten offices, 
derived from the aggregate male lives, reapplied to the several 
sections of entrants, which points out in a still more marked manner 
the inappropriateness of one aggregate table of mortality to measure 
the experience of its sections. There is also exhibited the extent 
of the deviations, favourable as well as unfavourable, in each yean 
of the assurances , from which it will be seen that the deviations 
are highly favourable during the first four years, and that after the 
fourth year they are almost always ^favourable. 
Assured Female Lives. 
In considering the mortality of females, there is, in the first place, 
given a comparison of the difference between the mortality of males 
and of females of the population, and of the Actuaries’ table of 1837, 
pointing out that a nearly similar relation exists between the results 
of these tables with that experienced between male and female 
assured lives in the Scottish offices, viz., a greater mortality of 
female life up to age forty-five. On the other hand, the male arul 
