The Hawk-eye and Iowa patriot. (Burlington, Iowa) 1839-1843, 1840-05-07

ology, which demonstrate that ami
mails ascend in the mental scale con
tinually, as their cerebal organs be-
come more complicated, and approx
mate in their structure nearer to those.
! Of man..
u. In cases of unusual excitement
or severe study, we frequently at the
time, but more often afterwards, ex-
Perlence a sense of WEAKNESS in the
brain, and this feeling is notgin gener-
al common to the whole brain, but to
isome particular part, at the base, top,
front, or back part of the head, as the
kind of study, or cause of excitement
may have called into action certain,
Iorgans.
The Cerebrum, Cerebellum, and Med
uNa Oblongata.
/ After what has been said in the pre-
ceding articles concerning the brains
functions, it can hardly be otherwise
than interesting to the intelligent
reader to have brief outline Of it's
organization given. sr a.".
By the term brain is included the
whole Of the nervous or fbrous sub
stance contained in the cavity of the
Uranium. Itconsists of three general
principal divisions,or apartments. The
largest division is named the cerebrum
or brain proper, the next in size is the
cerebellum or little brain, and the
least is the medulla-oblongata.
The cerebrum occupies the whole
of the upper and anterior cavity of the
Uranium. Its general shape is some
what similar to the half of an egg d.
vided longitudinally, larger behind
than before. and is composed Of two
corresponding hemispheres, or equal
halves, separated from each other in
the middle and above by strong
membrane called the falr cerebri, but
united at the bottom by commisure
called the corpus colosseum. "The
whole surface Of these hemispheres is
remarkable for great number Of en-
inences, rounded on the edges, flexu-
Gus, undulated, penetrating each 9TH
er with reciprocal inequalities, and
having some resemblance to the dis
position Of the small intestines.' In
the lower order of animal beings the
brain possesses few if any Of the emf
nences observed in man; it, gradually
improves in texture and becomes more
complicated as the mental scale as
cends, but no animal equals man eth.
err in the frmness of the brains texture
or the number and size of its emin en-
: ces. These eminences, according 10
phreuology, constitute the organic
! apparatus or particular organs the
mind makes use of in the manifesto
} tions Of thought and feeling, and as it
is ascertained the hemispheres cores
}, pond in form and functions. there are
two organs, one on each side of the
head for mental observation.
; The cerebellum is situated behind
the Medulla-oblongata at the poste-
rior base Of the Uranium. Like the
cerebrum it is composed of two hemis-
: pheres, but is wanting in the eminen-
!, ces which distinguish the former. It
is separated from the cerebrum which
! extends backwards over it by dense
) membrane called the tentorium. The
! cerebrum bears a proportion to the
rest of the brain in young children as
: to IS, IS, or 20, but at the age Of
l8 or 90, the proportion then found
: to exist is usually as to 81, or g..
; The medulla-oblongata constitutes
J much the best portion Of the brain,
4 bearing no greater proportion to the
: rest than as to 60, or 65. 1t is sit.
| b , 3d.
uated at the middle of the base of the
Uranium, and gives off the spiral mar
row at its lower surface. i
!, In the House of Representatives, on
the 4th April, Mr. REYNOLDS, from the
Committee on the Public Lands, re.
ported the following: a bill to author
ize the selection of school lands in
: lieu of those granted to the half-breeds
: of the Sac and Fox Indians.
Be it enacted by the Sneate and
House Of Representatives of the
$ United States Of America in Congress
? assembled, That the county commits
/ sioners of the county Of Lee, in the