CONCLUSIONS. 
For tae considerations above stated and based on 
the data which has served as a basis for both studies, 
I believé that the conclusions to be drawn therefrom 
may be re-assumed in the following:— 
I. C. The new data of the present study when com- 
pared with that of the previous one, will justify the 
following principle which has served as a foundation 
for both studies: “The summum of notoriety generally 
corresponds to the summum of mental work; therefore, 
there should be found in a Biographical Dictionary, 
elements for study ng some of the laws pertaining to 
longevity in relation with mental work.” 
I. C. There are some forms of mental work favo- 
rable to longevity and others which are quite contrary; 
the former, as is proved by the data of the first study- 
and even more so by the present one-are those in which 
the imagination and the sentiments are predominated 
by the exercise of Reason, and the latter, on the con- 
trary, are those in which the imagination and senti- 
ments overcome the serene and cool exercise of rea- 
son. Again, there are oececupations of a mixed character 
and others of an indefinite nature in which there can 
scarcely be designated any mental work which may be 
verily considered useful. 
These latter occupations seem to be the most un- 
favorable to longevity; those of a mixed character na- 
-turally occupy the intermediate position between the 
two first mentioned, in regard to the duration of life 
