The DeLamar nugget. [volume] (DeLamar, Idaho) 1891-1900, 1896-11-20

sttenuOusiy denied. The results OF
xnerimerfs have been contradictory,
I'd as short time ago as 1894 Mari
sen concluded that the cells ard
bers of nervous centers do not grow
ain after destruction. But now
res NJ Alexander N. Vitzou, ard by a
ries of experiments on monkeys has,
( Would seem, proved that Marinesen
rs wrong, and that part of the
ain viii grow again if removed. OPP
ants of vivisection will condemn the
aren't biologist for cruelty, and VIII
rdlv accept the plea that the result
his experiments may alter for the
ger whole systems of treatment in
an disease or injury; yet, al such
t;0ns aside, no one can fail to see
interest of his conclusions from a
Is physiological standpoint We
from the American Naturalist
are) few paragraphs describing
apartments already mentioned.
81 pursuing his studies on the
siploGy of the occipital lobes, n
sander ~ Vitzou has discoverci
resence of cells and of nervou
RS il the substance of noviforma-
", 10 the monkey, two years and two
ti;ls after the complete cutting
a.Y of the occipital lobes. The en-
ext;rpation of those lobes results, as
Known, in total loss of sight in both
onleys and Eogs. The experience Of
ne author concerning this point agrees
it'll TINT of NJ. II. MunclI and confirms
s conclusions. The later researches
{ different scientists have confirmed
he facts which he demonstrated.
iicpeat.ng the experiment of total
trpation of the two occipital lobes
monkey, February 10, 1898, NJ.
tzou noticed during the fourth
onth the animal commenced 10 per
eive persons and objects, but with
eat difficulty At the end of II
aatis the ability to perceive was
catIy increased. The monkey could
Oh obstacles, which he could not DO
sing the first months following the
ration.
IN April "a, 1895, NJ yitzou re-
ted the operation upon the same
nal. After denuding the skull
found the orifces of trepana-
n closed by a mass of rather
N connective tissue. On lifting
. mass with care, to his aston
lutcriaud that Of the assistants stand
about him, he found the entire
ace which had formerly bcen occu-
Il by the occipital lobes completely |
t,l with a mass of new-formed ssb.
nee This he proceeded at once to
amino.
"a iortion was taken from the center |
the mass closing the orifce of |
,9anation, and another from the pos
rior part Of the new-formed sub
ance fou1d in the skull. M. |
tzou demonstrated the presence of |
ranidal nerve cells and of nerve
nrs. The nerve tissue was present |
large Quantities, and the nerve cells
IS numerous than in the occipital |
hes of the adult animal but their
essence in the new-forIned mass was
instant
In brief, the conclusion from the
seeding experiment is that the new
Stance occupying the place of the
iaital lobes was of nerve nature,
d that It was due to a new forma-
% Of cells and of nerve fibers in the
rain of the monkey. Here IS fact,
US the author, which demonstrates
9 possibility of regeneration Of nerve
sues il the brain, as we'll as what was
eyiously known, that active nutrition
maintained in the rest OF The organ.
Moreover, we find in the presence of
lis and nerve fibers in the new-formed
ass an explanation of the fact con-
rning the betterment, although
light, of the sense of sight This eX-
lains also contradictory facts pre-
eutcd by different scientists, in the
ase Of partial extirpation of the brain
ollowed by an amelioration of the
unctions lost during the first opera
ion. Literary Digest.