20 SENTIENT PRINCIPLE.. 
ter or worse advantage, while in connexion with 
the brain, as it is more or less favorably situated, 
though its essential qualities will not be altered. 
In order to ascertain on what circumstances the 
favorable operations of the powers of the mind de- 
pend, an extensive series of comparisons was ne- 
cessary. One point was soon ascertained. The 
united observations of mankind for ages, has de- 
monstrated, that all persens whose foreheads are 
greatly compressed are idiots, though in the best 
state of health. Hence a safe inference was drawn, 
that the developement of a duly proportioned vo- 
lume of brain in the forehead, is essential to the 
advantageous exercise of the powers of the mind. 
After proving that a due developement of volume 
was necessary to common sense, enlarged and 
compressed portions of the brain were to be ex- 
amined, in cases of remarkable strength or weak- 
ness in any of the faculties of the mind. Ifone 
individual possessed remarkable discriminating 
powers, and another was strongly predisposed tobe 
at variance with others; and if the former had a 
remarkable prominent ridge in the centre of the 
upper part of his forehead, and the latter had an 
unusual prominence back of his ears, the promi- | 
nent ridge in the forehead would be called the or- 
gan of discrimination, and the prominence back 
of the ears, the organ of combativeness. Should 
the same coincidence of prominences and faculties 
frequently occur, after twenty or thirty years of 
accurate observation, the location of them would 
be considered as the residence of such faculties ; 
and their volume would indicate their degree of 
strength or weakness. : 
ea 
