1022 ANALYTICAL INDEX. 
Nervous System (continued). 
developement of nerve, 600 
bie g nee cone, 601 
Nervous System, Comparative Anatomy of, 601 
in the Acrita, or 
in the Poly ota 601 
Actinia, 
in the Radiata, 602 
in the Mollusca, 603 
Tunicata, 603 
Asciolia mammillata, 603 
Phallusia intestinalis, 603 
Conchife: A 
Gasteropoda, 60s 
mpet (Patella), 605 
Chiton marmoratus, 606 
in the Articulata, 606 
Entozoa, 607 
Rotifera, 607 
eee 609 
Ranatra linearis, 610 
Geotrupes stercorarius, 610 
Dyticus marginalis, 611 
pootene poronts minor, 611 
Mormo Maura, 612 
motor and sensitive function of ganglionic 
and non-ganglionic cords, 613 
concluding general remarks, 614 
in the Vertebrata, 614 
Pisces, 614 
anatomy of the Amphioxus Lanceolatus, 615 
neuro-skeleton, 615 
nervous system, 616 
brain of fishes, 618 
weight of the brain compared with that of the 
body, 618 
olfactory tubercles, or first cerebral mass, 618 
optic lobes, or second cerebral mass, 619 
cerebellum, or third cerebral mass, 619 
Amphibia and Reptilia, 620 
rain, 620 
weight compared — that of the body, 620 
olfactory tubercles, 621 
brain and spinal cord of lizard, 621 
optic lobes, 621 
cerebellum, 621 
Aves, 621 
brain, 622 
weight compared with that of the body,622 
cerebral hemispheres, 622 
optic lobes, 622 
cerebellum, 623 
Mammalia, 623 
table of the relative proportions of the brain 
and spinal marrow in the four classes of 
Vertebrata, 623 
table of the relative proportions of the body 
44 brain in the four classes of Veriebrata, 
cerebral hemispheres, 624 
corpus callosum, 625 
ventricles of brain, 625 
olfactory nerves, 625 
optic lobes, 625 
cerebellum, 625 
table shewing the actual and relative lengths 
of the cerebral hemispheres and the cere- 
bellum in the Mammalia, 626 
general remarks in conclusion, 626 
“Nervous Centres. 
coverings of the nervous centres, 627 
coverings of the ganglions, 627 
coverings of the spinal cord and brain, 627 
dura mater, 627 
spinal, 628 
cranial, 628 
processes, 629 
falx cerebri, 629 
tentorium = 629 
falx cerebelli 
vessels of the spinal dura mater, 629 
of the cranial dura mater, 630 
a 631 
rior longitudinal, 631 
is erior longitudinal, 631 
strait, 631 
torcular Herophili, 631 
lateral sinuses, 632 
occipital, 632 
petrosal, superior and inferior, 632 
transverse, 
cavernous, 633 
a ge 633 
pia mater, 
of the eel cord, 633 
mater into 
cerebral ventricles, is 
— plexnees oft the lateral ventri 
cles, - 
velum interpositum, 635 a 
roa plexuses of the fourth ventr 
e, — 
Suryetalline. formations Men 
choroid plexuses, &c. 635 
ayn nas &c. of the pia — 
n reference to pathol ’ 
“ae 636 es ta € 
cerebral, 63 
cerebro-spinal uid, 637 
fluid in the cerebral ventricles, 0 * 
orifice of communication, as de 
Majendie, between the — v 
the sub-arachnoid 5; 
sar 5a of the qeanthey- ot teas the 
fluid, 
cerebro-spinal fluid in reference to 
Peace of its secretion, 643 
apt and chemical 
use, 
pee Bite Pacchioni, 644 
are they inp Fo structures? 645 
ligamentum dentatum, 645 
a on the structure of nervous c 
white nervous matter, 646 
grey nervous matter, 647 
a 648 
remarks on the great simplicity of form o 
elements of grey nervous matter, 649 
pigment, 649 
structure of ganglions, 649 
cerebro-spinal centre, 650 
spinal cord, 650 
bulk, 
length a circumference, 65! 
fissures, 652 
anterior, 652 
posterior, 652° 
commissure, 659 
internal structure as shewn by t: 
tions, 652 
eee ~ al in th 
st pokes ng canal in e spinal o 
bloodvessels, 
anterior "spinal artery, 656 
posterior spinal arteries, 657 
veins, 657 
spinal nerves, ae anterior and po 
roots, ganglion, 657 : 
sub-occipital nerve, 658 
characters proper to the nerves of pa 
lar regions, 658 
cervical nerves, 658 
dorsal nerves, 658 
lumbar nerves, cauda 
relations of the roots of the 
columns of the cord and ‘to 
matter, as determined ) 
as determined by physio! » 660 
encephalon, 661 
size compared with ye of the body in 
rent animals, 
ery with that of the 
» 662 
weight of t the human encephalon, on 
table showing the ave w 
of the human enceph int € 
females, 662 
relative weight of encep 
cerebellum, &c. in m : 
663 
relative weight of entire be 
cecrenenens cerebrum, cerebe! 
<a 
absolute weight of the brain of t 
phant and whale, 
weight of brain of some animals gr 
than that of man, 
weight of their bodies, 664 
conclusions of Tiedeman, d 
his observations, 
the brain in different races of mank: 
method of examining the brain, 667 
method < Willis, 663 a 
of Reil, Gall, and Sp 
surface of the ence €70 
