onnected, should have been felt within eight hours of each other,
whereas there was several days' difference. His theory, which is amply
sustained by observation, is that an earthquake is a movement caused
by a shrinking, from loss of heat, of the interior of the earth and
the crushing together and displacement of the rigid exterior as it
accommodates itself to this contraction. It has been noticed that the
earth is shaken along the Alleghany chain nearly every year. It is
impossible to predict a recurrence of the shocks, but it is quite
probable they will recur. There is a record of 231 earthquakes in the
New England States between the years 1638 and 1869."--_Brooklyn
Eagle_.

CHAPTER II--STRUCTURE OF THE BRAIN.

Man a triple being--Materialists and illusionists misconceive
him--Relation of the soul to the brain and body--The nervous
system; illustration--Embryonic condition--Anatomical
descriptions unsatisfactory and the phrenological school
incorrect--Exterior view of the brain in the head, illustrated
and described--The cerebrum, cerebellum, and
tentorium--Interior view of the base of the skull--Bones of
the head illustrated--Division of the brain into lobes and
convolutions, with illustration--Frontal, middle, parietal,
tempero-sphenoidal, and occipital--Anatomical plan or grouping
of convolutions differs from their actual appearance--View of
the superior surface illustrated--Difference between the
irregular convolutions and the angular maps--View of the
inferior surface of the brain--Illustration and description of
the parts--Interior view of section on the median
line--Divided and undivided surfaces-_Corpus callosum_
explained--The two brains and their diagonal relations to the
body--Penetrating and describing the lateral ventricles--The
serum in the brain--Variations of serum and blood--Variations
in hydrocephalus and insanity--Our power to modify the brain
and change our destiny--Power of education--Responsibility of
society--The lateral ventricles the centre of the brain--Base
of the ventricles, the great inferior ganglia of the brain,
_corpora striata_, and _thalami_--Their radiating fibres
inclosing a cavity--The _thalami_ and their commissure and
third ventricle--The _medulla oblongata_, cerebellum, and
_arbor vitae_--The _pons Varolii_ and crura of the brain--the
_corpora quadrigemina_,