conditions of neurological experiments for
scientific purposes were satisfactory, and to make such experiments,
the subjects, instead of being ignorant, passive, emotional, hysteric,
or inclined to trance, should be as intelligent as possible,
well-balanced and clear-headed,--competent to observe subjective
phenomena in a critical manner. Hence, my experiments, which have been
made upon all sorts of persons, were most decisive and satisfactory to
myself when made upon well-educated physicians, upon medical
professors, my learned colleagues, upon eminent lawyers or divines,
upon strong-minded farmers or hunters, entirely unacquainted with such
subjects, and incapable of psychological delusion, or upon persons of
very skeptical minds who would not admit anything until the phenomena
were made very plain and unquestionable.

While the nervaura of the human constitution (which is as distinctly
perceptible to the sensitive as its caloric and electricity) is
emitted from every portion of the surface of the head and body, the
quality and quantity of that which is emitted from the inner surface
of the hand, render it most available, and the application of the hand
of any one who has a respectable amount of vital and mental energy,
will produce a distinct local stimulation of functions wherever it may
be applied upon the head or body. In this manner it is easy to
demonstrate the amiable and pleasing influence of the superior regions
of the brain, the more energetic and vitalizing influence of its
posterior half, and the mild, subduing influence of the front.

In my first experiments, in the spring of 1841, I found so great
susceptibility that I could demonstrate promptly even the smallest
organs of the brain, and it was gratifying to find that the
illustrious Gall had ascertained, with so marvellous accuracy the
functions of the smallest organs in the front lobe, and the subject
could be engrossed in the thought of numbers and counting by touching
the organ of number or calculation. Eagerly did I proceed in testing
the accuracy of all the discoveries of Gall and the additions I had
made by craniological studies, as well as bringing out new functions
which I had not been able to anticipate or discover. Omitting the
history of those experiments, I would but briefly state that in 1842 I
published a complete map of the brain, in which the full development
of human faculties made a complete picture of the psycho-physiological
const