ova. iii. 553.
development of the embryo, iii. 553.

history of the process according to the
observations of Newport on the
Julus, iii. 553-^560.
and of Gervais on the growth of

Lithobius, iii. 560.

organs and mode of locomotion of the, iii. 443.
senses, iii. 550.

list of Myriapoda possessing the property of luminous-
ness, iii. l'J8.

Myriapoda chilognatha, iii. 545.
Myrmecobius, a genus of Marsupialia, iii. 260, et seq.

characters of" the genus, iii. 260.
fasciatus, iii. 260.
Myrmecopkaga, or ant-eater, its mode of taking its prey,

iii. 8.

Mynneleonidte, or ant-lions, ii. 865.
Myrtiform fossa, ii. 207.

muscle, ii. 223.
MylHus (mussel), nervous system of the, iii. 604.

preparations of the, iii. 605.
jfyftna glutinosa, or hag-fish, iii. 976.
teeth and parasitic habits of, iii. 976.



N.

Neevus maternus, or mother's mark, i. 242 ; ii. 333.

classification of nasvi, i. 243.

speculations as to structure of, i. 243.

vascular naevi of the face, ii. 228.
Naidcs. organs of circulation in the, i. 650.
Nails, structure of, s. 477.

adventitious formation of, iv. 139. 143.

of cats, i. 255.

Naja, asps or hooded snakes, poison fangs of, iv. 291.
Nape of the neck, or nucha, i. 367-

furunculi in the, i. 368.
Narcotic*, effects of, on the heart and bowels, iii. 30.

on nervous system, analogous to dreaming, iv. 690.
Narcs interne, or cavae nares, iii. 723.

calculi of the, iv. 82.
Nasal apparatus of Pachydermata, iii. 874.

snout of hog, iii. 874.

proboscis of elephant, iii. 875.
Nasal artery, i. 492 ; iii. 786.
of septum, i. 487.

externa communis, i. 487.
laterales nasi, i. 487.
dorsales nasi, i. 487,

bone, i. 729; ii. 210. 212; iii. 725.
borders, ii. 212.

1. superior, ii. 212.

2. inferior, ii.212.

3. external, ii. 212.

4. internal, ii. 212.
connexions, ii. 212.
development, ii. 212.
structure, ii. 212.
surface?, ii. 212.

1. anterior, or cutaneous, ii. 212.

2. posterior, or pituitary, ii. 212.
canal, iii. 725.

cartilages, iii. 726.
cavity, iii. 723, 724.
duct, iii. 90. 92. 725.

osseous duct for the, iii. 92.

plica and villi, iii. 92.

secretion, iii. 92.

structure, iii. 92.
fossa, i. 731 ; ii. 212 ; iii. 723.
infundibulum, iii. 724.
internal, or ethmoidal, branch of the fifth pair of

nerves, iii. 733.
lamella, i. 731.
meatuses, i. 7 -"A.

inferior, iii. 725.

superior, iii. 724.
muscles, ii. 222.
nerve, ii. 81 ; iii. 93 785.
external, ii. 282.



Nasal artery continued,
anterior superior, ii. 287.
posterior superior, or Vidian, ii. 287, 283.
or lachrymal, process of the lowest spongy bone,

iii. 91.
process, or plate, i. 729; ii. 208. 210.

borders, anterior, posterior, and upper, ii. 208.
prominence, i. 729.
Nasal septum, septum mobile nasi, i. 731 ; iii. 725, 726.

spine, posterior, ii. 210.
Nasalis labii superioris rcuscle, Hi. 729.

relations and actions, iii. 729.
JViMo-labialis muscle, ii. 224.
JVcwo-lobar nerve, ii. 282.
Mwo-maxillary, or anterior border of superior maxillary

bone, ii. 209.

Naso-or.u\ar nerve, it 281.
A'cwo-palatine ganglion, ii. 287. 371.
nerve, ii. 282.
or internal surface of superior maxillary bone, ii.

208.
Natatores, or swimming-birds, characters of, L 269.

pelves of, s. 168.

Natchez Indians, remarkable custom of the, iv. 1360.
Kates (of brain), iii. 677- 6S5.
Nausea, sensation of, ii. 26.
causes of, ii. 27.
vomiting, ii. 26.

NautUidte, fossil shells of the, i. 520
characters of the family, i. 520.
Nautilus, i. 520, et seq. *

organ of smell of the, iv. 700.

renal organs of the, iv. 232.

paper-nautilus, or Argonaut, mode of progression of

the, iii. 436.

Navicular bone, ii. 340. 343.
of carpus, ii. 505.
articulations, ii. 505.
fossa, i. 727 : ii. 550 ; iv. 1248 ; s. 709.
Near sight See Myopia ; VISION.
Neat's^foot oil, chemical characters of, ii. 233.
Nebulte of the cornea, ii. 177.
NECK, iii. 561.

definition, iii. 561.
I. Muscles, iii. 561.

a. anterior vertebral group, iii. 561.

longuscolli, iii. 5 SI.

rectus capitis anticus major, iii. 561.

b. lateral vertebral group, iii. 561.

intertransversales colli, iii. 561.
rectus capitis lateralis, iii. 561.

anticus minor, iii. 561.
scalenus anticus, iii. 562.
posticus, iii. 562.

c. depressors of os hyoides, iii. 562.

sterno-hyoid, iii. 563.
sterno-thyroid. iii. 563.
thyro-hyoid, iii. 563.
omo-hyoid, iii. 563.
digastric, iii. 563.
stylo-hyoid, iii. 564.
mylo-hyoid, iii. 564.

d. connected with the tongue, iii. 564.

hyo-glossus, iii. 564.
stylo-glossus, iii. 565.
genio-hyo-glossns, iii. 565.
lingualis, iii. 565.
genio-hyoideus, iii. 565.

e. superficial on the side of the neck, iii. 565.

sterno-cleido-mastoideus, iii. 565.

platysma myoides, iii. 566.

risorius San'torini, iii. 566.
II. Fasciae, ii. 2-30; iii. 566.

superficial or subcutaneous areolar tissue, iii. 566.
cervical, iii. 568.

pre-vertebral, iii. 569.

cervico-thoracic septum, iii. 570.

III. Regional or surg ; cal anatomy, iii. 570.

superficial veins and nerves, iii. 571.

1. mesial region of the neck, iii. 572.

laryngotomy and the parts concerned, iii. 573.
tracheotomy and the parts concerned, iii. 574
crico-tracheotomy, iii. 574.

2. antero-inferior triangle, iii. 574.

thyroid body, iii. 575.

bronchocele, iii. 575.

oesophagotomy, and the parts concerned, iii.
576.

3. antero-superior triangle, iii. 576.

glandulae concatenate, iii. 577.

4. postero-superior triangle, iii. 577.

5. postero-inferior triangle, iii. 577.

subclavian artery, and operations connected

therewith, iii. 578.
subclavian vein, iii. 579.
jugular vein, iii 579.
thoracic duct, iii. 579.

arteria innominata, and operations connected
therewith, iii. 580.

6. digastric space, iii. 581.

7. posterior pharyngeal region, iii. 582.

8. relations of the >terno-cleido mastoidcus, iii. 583.



822



GENERAL INDEX.



NECK continued.

Practical observations relating to the anatomy and
diseases of the neck, iii. 583.

1. diagnosis of tumours, iii. 583.

2. collateral circulation after obliteration of the

main arterial trunks, iii. 584.

3. anomalous arrangements of the cervical vessels,

iii. 585.

4. remarks on the veins, iii. 585.

congenital fissure (fistula colli congenita), iv. B53.
Neck of rib, iv. 1026.

of the scapula, iv. 573.

Necrophaga, a sub-tribe of Coleoptera, ii. 860.
Necrosis of bone, i. 453.

bones liable to necrosis, i. 456.
process by which it is accomplished, i. 453.
the sequestrum, i 455.

time necessary for the completion of necrosis, i. 455.
of the cranium, i. 746.
of the hyoid bone, iv. 1162.
of the bones of the face, ii. 220.
of the bones of the knee-joint, combined with acute

arthritis genu, iii. 64.
displacements occurring in chronic necrosis in the

vicinity of the knee, iii. 65.
Negrito race, physical and mental characters of the, iv.

1362.
Negroes, characters of the, iv. 1352.

distinctive characters of the crania of, iv. 1321.
portrait of young Negro of Benguela, iv. 1321.
characteristics of the brain of, iii. 6t>6.

capacity and weight of ,<kull of the Negro, iii. 666.
comparison of the Negro brain with that of other

races, iii. 666.

anatomical conformation of the Negroes, cited as an ex-
ample of the permanence of the physical charac-
ters of races, iv. 1329.
proofs to the contrary, iv. 1329.
size of the pelves of "Negroes compared with those

of Europeans, s. 148.
causes of the tendency to extinction in the African

races, iv. 1341. 134*.

psychical characters of Negroes, iv. 134*.
Semitic affinity of the Negro nations, iv. 1353.
Negroes liable to anorthopia, iv. 1462.
Neigh of the horse, iv. 1492.
Nematoidea, an order of Entozoa of Rudolphi, ii. 116. See

ENTOZOA ; Sterelmintha.
formation and fecundation of ova of, s. [123.]
Nematoneura, characteristics of, i. 47, 48.
organs of digestion of, s. 29a
ova of, s. [120.]

Nepn cinerea, or water-scorpion, ii. 868.
Nephritis, acute suppurative, iv. 257.
desquamative, iv. 257.

chronic, iv. 258.

characters of the urine in nephritis, iv. 1291.
Nereis, muscles of the, iii. 538.
NEUVE, iii. 591.

structure of cerebro-spinal nerves, iii. 591.
ncurilemina, iii. 591.
ultimate nervous fibre, 591.

tubular membrane, iii 591.

white substance of Schwann, iii. 592.

flattened band of Remak, iii. 592.

changes produced by the action of water and

other re-agents, iii. 592.
varicose appearance of nerve-tubes, iii. 593.
table of measurements of nerve-tubes in Man

and the other Vertebrata, iii. 593.
absence of anastomoses in nerve-tubes, iii. 593.
comparison of nervous with muscular tissue, iii. 593.
branching of nerves, iii. 594.
anastomosis, iii. 594.

decussation of the primitive fibres within the trunk

of a nerve, iii. 594.
anastomosis of descending branch of the ninth

nerve with the cervical plexus, iii. 594.
commissure of optic nerve, iii. 595.
anastomosis by fusion ; Volkmann's observations,

iii. 595.

nervi nervorum, iii. 595.
plexuses, iii. 595.

origin of nerves, iii. 595. See also NERVOUS CEN-
TRES.

in muscle, iii. 596.

peripheral expansion of nerves on sentient sur-
faces, iii. 596.

papilla? of the skin, iii. 596.
retina and optic nerve, iii. 596.
olfactory nerves, iii. 597.
the auditory nerve, iii. 597.
structure of the ganglionic nerves, iii. 597.
neurilerama, iii. 597.
ramification, iii. 597.
peripheral distribution, iii. 598.
plexuses, iii. 598.
nerve-tubes, iii. 598.
cells, iii. 59*.
gelatinous fibres, iii. 599.

difference between the structure of the sympathetic
and the cerebro-spinal fibre, iii. 599.



NERVE continued.

nerves of the Invertebrata, iii. 600.
development of nerve, iii. 600.
recapitulation, iii. 601.
NERVOUS SYSTEM, iii. 585.

general observations on the disposition and composi-
tion of nervous matter, the nature of nervous ac-
tions, and the subdivisions of the nervous system,
iii. 586.
nervous matter, iii. 586.

how disposed through the animal kingdom, iii.

586.
chemical composition, 587.

Vauquelin's analysis, iii. 587.
Fremy's method of analysis, iii. 587.
cerebric acid, iii. 587.
oleophosphoric acid, iii. 587.
cholesterine, iii. 588.

variation of the quantity of phosphorus in dif-
ferent periods of life, and its small amount in
idiotcy, iii. 588.

L'Heritie's analyses of cerebral matter of in-
fants, youth, adults, old men, and idiots, iii.
588.
nervous actions, iii. 588.

mental nervous actions, iii. 588.
actions of perception, iii. 588.
common sensibility, iii. 588.
special sensibility, iii. 589.
actions of emotion, iii. 589.
physical nervous actions, iii. 589.

contraction of the iris occasioned by the stimu-
lus of light, iii. 5b9.
deglutition, iii. 589.

excitement of the respiratory muscles by the
sudden application of cold to the surface of
the body, iii. 589.
reflex action, iii. 590.
anatomical subdivision of the nervous system ; brain,

spinal cord, and ganglions, iii. 590.
the nerves in infancy, i. 72.

conditions furnbned by the nervous system to the
maintenance of the contractile power of muscles, i.
722.
influence of the nervous system upon the circulation, i.

679. See CIRCULATION; CONTRACTILITY; HEART.
relation between the nervous and absorbent systems, i.

34.

elasticity of nervous matter, ii. 60.
influence of the nervous system on the secreting pro-
cess, iv. 464.

theories as to this influence, iv. 469.
reflex nervous action, iii. 5, note.
NERVOUS SYSTEM (comparative anatomy), iii. 601.
in the Acrita, iii. 601.
in the Polypifera, iii. 601.

Actinia, iii. 601.
in the Radiata, iii. 602.
in the Mollusca, iii. 603.
Tunicata, iii. 603.

Ascidia mammillata, iii. 643
Phallusia intestinalis, iii. 603.
Conch ifera, iii. 603.
Gasteropoda, iii. 605.

Limpet (Patella), iii. 605.
Chiton marmoratus, iii. 606.
Aplysia, iii. 606.
Scylheapelagica.iii. 606.
Limax ater, iii. 606.
in the Articulata, iii. 606.

Helminthoid Articulata, iii. 607.
Entozoa, iii. 607.
Rotifera, iii. 607.
Cirropoda, iii. 607.
Annelida, iii. 607.
Entomoid Articulata, iii. 608.
Crustacea, iii. 6()8.
Myriapoda, iii. 609.
Arachnida, iii. 609.
Insecta, iii. 609. See also TNSECTA.
Ranatra linearis, iii. 610.
Geotrupes stercorarius, iii. 610.
Dyticus marginalia, iii. fill.
Saturnia pavonia minor, iii. 611, 612.
Mormo Maura, iii. 6i2.
motor and sensitive function of panglionic

and non-ganglionic cords, iii. 613.
concluding general remarks, iii. 614.
in the Vertebrata, iii. 614.
Pisces, iii. 614.

anatomy of the Amphioxus lanceolatus, iii.

615.

neuro-skeleton, iii. 615.
nervous system, iii. 615.
brain of Fishes, iii. 618.

weight of the brain compared with that of the

body, iii. (518.
olfactory tubercles, or first cerebral mass,

iii. is 18.
optic lobes, or second cerebral mass, iii.

619.
cerebellum, or third cerebral mass, iii. 619.



GENERAL INDEX.



823



NERVOUS SYSTEM, Vertebrata continued.

Amphibia and Keptilia, i. 100; iii. 620.
brain, iii. 620.

weight compared with that of the body, iii.

tr.U
olfactory tubercles, iii. 621.

brain and spinal cord of lizard, iii.

621.

optic lobes, iii. 621.
cerebellum, iii. 621.
Aves, iii. 621.

brain, i.i. 622.

weight compared with that of the body, iii.

622.

cerebral hemispheres, 622.
optic lobes, iii. 622.
cerebellum, iii. 623.
Mammalia, iii. 623.

table of the relative proportions of the brain and
spinal marrow in the lour classes of Verte-
brata, iii. 623.
table of relative proportions of body and brain

in the four classes of Vertebrata, iii. 624.
cerebral hemispheres, iii. 624,
corpus callosum, iii. t '2~>.
ventricles of brain, iii. 625.
olfactory nerves, Hi. 625.
optic lobes, iii. 625.
cerebellum, iii. b25.

table showing the actual and relative lengths of
the cerebral hemispheres and the cerebellum
in the Mammalia, iii. 626.
general remarks in conclusion, iii. 626.
See also under the various headings of classes, &c. f of

animals.

NERVOUS CENTRES (in human anatomy), iii. 626.
definition, iii. 626.
general and descriptive anatomy of the nervous centres,

iii. 627.

Coverings of the nervous centres, iii. 627.
of the ganglions, iii. 627.
of the spinal cord and brain, iii. 627.
dura mater, iii. 627.
spinal, iii. 628.
cranial, iii. 628.

processes, iii. 629.

falx cerebri, iii. 6C9.
tentorium cerebelli, iii. 629.
falx cerebelli, iii. 629.
vessels of the spinal dura mater, iii. 629.
of the cranial dura mater, iii. 630.
sinuses, 631.

superior longitudinal, iii. 631.

inferior longitudinal, iii. 631.

strait, iii. 631.

torcular Herophili, iii. 631.

lateral sinuses, iii. 632.

occipital, iii. 632.

petrosal, superior and inferior, iii.

632.

transverse, iii. 632.
cavernous, iii. 633.
circular, iii. 633.
pia mater, iii. 633

of the spinal cord, iii. 633.

of the brain, iii. 6J4.

continuations of the pia mater into the

cerebral ventricles, iii. 634.
choroicl plexuses of the lateral ventri-
cle, iii 6:>4.

velum interpositum, iii. 6.55.
choroid plexuses of the fourth ventri-
cle, iii. 635.
crystalline formations in the

choroid plexuses, &c., iii. 635.
connexions, &c. ot the pia mater, iii. 636.
in reference to pathology, iiL 636.
arachnoid, iii. 636.
spinal, iii. 636.
arachnoid bag or sac, iii. 636.
sub-arachnoid cavity, iii. 636.
internal arachnoid, hi. 637.
cerebral, iii. 637.
cerebro-spinal fluid, iii. 638.

fluid in the cerebral ventricles, iii. 640.
orifice of communication, as described by
iMajendie, between the fourth ventricle
and the sub-arachnoid space, iii. 640.
estimate of the quantity of the sub-arach-
noid fluid, iii. 641.

cerebro -spinal fluid in reference to patho-
logy, iii. 642.

manner of its secretion, ii:. 643.
physical and chemical properties of the

cerebro-spinal fluid, analyses, iii. 643.
use of the cerebro-spinal fluid, iii. 643.
glamlultc Pacchioni, iii. 644.

are they natural structures ? iii. 645.
ligamentum dentatum, iii. 64-5.
General remarks on the structure of nervous centres,

i. 646.
white nervous matter, iii. 646.



NERVOUS CENTRES continued.

grey nervous matter, iii. 647.
development, iii. 648.
remarks on the great simplicity of form of the

elements of grey nervous matter, iii. 649.
pigment, ii. 649.
Structure of ganglions, iii. 649.
Cerebro-spinal centre, iii. 650.



Spinal cord, iii. 650.
position, iii. 651.



shape, iii. 651.

bulk, iii. 651.

length and circumference, iii. 65L

fissures, iii. 652.

anterior, iii. 652.
posterior, iii. 652.
white commissure, iii. 652.
grey commissure, iii. 652.
internal structure as shown by transverse sec-
tions, iii. 653.

antero-lateral columns, iii. 653, 654.
posterior columns, iii. 653, 654.
arrangement of the grey matter in the spinal

cord, iii. 653. '
conclusions, iii. 654.
is there a central canal in the spinal cord ? iii.

655.
blood-vessels, iii. 656.

anterior spinal artery, iii. 656.
posterior spinal arteries, iii. 657.
veins, iii. 657.
spinal nerves, origin, anterior and posterior

roots, ganglion, iii. 657.
sub-occipital nerve, iii. 658.
characters proper to the nerves of particu-
lar regions, iii. 658.
cervical nerves, iii. 658.
dorsal nerves, iii. 658.
lumbar nerves, cauda equina, iii.

658.

relations of the roots of the nerves to the
columns of the cord and to the grey
matter, as determined by dissection, iii.
659-

as determined by physiology, iii. 660.
Encephalon, iii. 661.

size compared with that of the body in diffe-
rent animals, iii. 661.
compared with that of the encephalic

nerves, iii. 662.
weight of the human encephalon, iii. 662.

table showing the average absolute weight
of the human encephalon, in males
and females, iii. 662.
relative weight of encephalon to cere-
bellum, &c. in males and females,
iii. 663.

relative weight of entire body to ence-
phalon, cerebrum, cerebellum, &c.
iii. 663.

conclusions, iii. 664.
absolute weight of the brain of the elephant

and whale, iii. 664.

weight of brain of some animals greater
than that of man, relatively to the
weight of their bodies, iii. 664.
conclusions of Tiedeman, deduced from

his observations, iii. 664.

remarks on the comparison of the brain of
man with that of the lower animals, iii. 664.
the brain in different races of mankind, iii. 665.
method of examining the brain, iii. 667.
method of Willis, iii. 668.

of Reil, Gall, and Spurzheim, iii. 669.
surface of the encephalon, iii. 670.
shape of the brain, iii. 670.
superior and lateral surfaces, iii. 670.
base of the brain, iii. f>70.

anterior segment, olfactory sulcus, iii.

670.

fissure of Sylvius, locus pcrforatus
anticus, island of Reil, iii. 671,
672.
middle segment, iii. 672.

pituitary process, tuber cinereum,

iii. 673.
optic Iracts and optic commissure,

iii. 673.

corpora albicantia, iii. 673.
crura cerebri, intercrural space,
substantia perforata, pons Ta-
rini, iii. 673.
transverse or horizontal fissure,

iii. 673.

circle of Willis, iii. 673.
posterior segment, iii. 673.
dissection of the brain from above down-
wards, iii 674.
centrum ovale minus and majus, iii.

674.

corpus callosum, longitudinal tracts,
iii. 674.



824-



GENERAL INDEX.



NERVOUS CENTRES, dissection of brain continued.
lateral ventricles, iii. 67*.

septum lucidum, iii. 674.
fifth ventricle, iii. 674.

parts seen in the lateral ventricles,

iii. 675.

fornix, iii. 675.
third ventricle, iii. 676
pineal gland, iii. t,"7.
anterior commissure, iii. 675.
soft commissure, iii. 6/7.
mesocephale, iii. 677.

corpora quadrigemina, iii. 677.
processus cerebelli ad testes, iii.

677.

valve of Vieusseii!!, iii. 678.
pons Varolii, iii. 678.
cerebellum, iii. 678.
fourth ventricle, iii. 678.

examination of the various segments of the ence-
phalon, with a more especial reference to the
structure and physiological bearing of each,
iii. 678.
medulla oblongata, iii. 678.

columns, anterior pyramidal, iii. 679. 684.
olivary, iii. 679. 683, 684.
corpus dentatum, iii. 6,'3.
posterior pyramidal, iii. 679. 683.

course of fibres, iii. 660.
restiform, iii. 679. 682. 684.
interpretation of the various columns,

iii. 684.

definition, iii. 679.
development, iii. 683.
fibres of, antero-posterio-, iii. 680. 685.
arciform, iii. 680.
decussating, iii. 680.
nerves connected with, iii. 684.
shape, iii. 697.

transverse sections of, iii. 683.
mesocephale, iii 684.
pons Varolii, iii. 685.
corpora quadrigemina, iii. 685.
processus cerebelli ad testes, iii. 686.
valve of Vieussens, iii. 686.
conclusions, iii. 686.
cerebellum, iii. 687.

arbor vitae, lateral and median, iii. 692.
castration, alleged effects of, on the cere-
bellum, iii. 687.
commissures, iii. 691.

long and hidden, iii. 691.
short and exposed, iii. 691.
single, iii. 691.

corpus dentatum or rhomboideum, iii. 692.
crus cerebelli, iii. 692
peduncles of, iii. 693.
inferior, iii. 693.
middle, iii. 693.

superior, processus cerebelli ad
testes, or cerebro-cerebellar com-
missures, iii. 693.

development of the cerebellum, iii. 687.
relative development of cerebellum to cere-
brum in the adult, iii. 687.
fissures, iii. 687.

horizontal, iii. 688.

purse-like fissure, or posterior notch,

iii. 688.

semilunar, iii. 687.
valley, iii. 687.
lamina?, iii. 689 691.
lobes and lobules, iii. 689.
amygdala, iii. 689. 692.
biventral, iii. 689. 692.
median, iii. 689.
posterior, iii. 689. 692.

pyramid of Reil, iii. 691.

uses, iii. 691.

posterior superior lobe, iii. 689. 692.
slender, iii. 689.
spigot of Reil, iii. 691, 692.

uses, iii. 691.
square lobe, iii. 689. 691.
nodule, iii. 690. 693.
shape ot the cerebellum, iii. 687.
sections of the cerebellum, iii. 692.
horizontal, iii. 692.
vertical, iii. 692.
size and weight of the cerebellum, iii.

687.
subdivisions into median lobe and lateral

lobes or hemispheres, iii. 687.
surfaces, inferior, iii. 689.691.
superior, iii. 689. 691.
tentorium cerebelli, iii. 687.
velum, posterior medullary, iii. 6SO.
ventricle, fourth, iii. 693.

aqueductus Sylvii, iii. 693.
calamus scriptorius, iii. 693.
choroid plexuses of the fourth ven-
tricle, iii. 693.



NERVOUS CENTRES, cerebellum continued.
vermiform process, iii. 687.
inferior, iii. 687.
superior, iii. 687.
white and grey matter, iii. 692.
microscopic anatomy of the cerebellum, iii.

709.

hemispheres of the brain, iii. 678. 693.
definition, iii. 6y3. 695.
convolutions, iii. 6P3.

indie, it ons afforded by the existence

of convolutions, iii. 694.
absence of convolutions in all the

classes below Mammalia, iii. 694.
Gall and Spurzheim's views of, iii. 695.
primary convolutions in the fox, iii.

696.

in the dog, iii. 696.
in cats and hyenas, iii. 696.
secondary convolutions in ruminants,

iii. 696.

in the elephant, iii. 696.
in the monkey, iii. 696.
in the human subject compared with
that of the inferior animals, iii.
696.

symmetry, iii. 696.
constant convolutions in the hu-
man brain, iii. 6D7.

1. the internal convolution,

iii. 697.

2. convolution of the Sylvian

fissure, iii. 698.

3. insula of Reil, iii. 698.

4. pair of convolutions en-

closing the olfactory pro-
cess, iii. 698.
hippocampi, iii. 698.
direction of the white fibres in the con-
volutions, iii. 693.
disappearance of the convolutions in

hydrocephalus, iii. 698.
corpora striata, iii. 698.

course of fibres, iii. 699.
vesicular matter, iii. 699.
optic thalami, iii. 700.

corpora geniculata, iii. 700.
corpora mammillaria, iii. 701.
commissures of the brain, iii. 701.
longitudinal commissures, iii. 701.

1. superior longitudinal commis-

sure, iii. 701.

2. longitudinal tracts, iii. 701.

3. fornix, iii. 701.

4. taenia semicircularis, iii. 702.
transverse, iii, 702.

1. corpus callosum, iii. 702.

2. anterior commissure, iii. 702.

3. posterior commissure, iii. '/03.

4. soft commissure, iii. 703.
tuber cinereum, iii. 703.
pituitary body, iii. 703.
ventricles of the brain, iii. 704.
circulation in the brain, iii. 704

arterial, iii. 704.
venous, iii. 705.

question as to whether the amount of
blood within the cranium is liable to
variation, iii. 706.
encephalic nerves, iii. 707.
Sketch of the microscopic anatomy of the spinal

cord and brain, iii. 707.
of spinal cord, iii. 707.
medulla oblongata, iii. 708.
mesocephale, iii. 709.
cerebrum and cerebellum, iii. 709.
Brief statement of the probable modus operand!

of the brain, iii. 710.
NERVES AND NERVOUS CENTRES (abnormal anatomy), iii.

regeneration of nervous matter, iii. 712.

abnormal anatomy of the spinal cord and its membranes,

iii. 712.
membranes, iii. 712.

affections of the dura mater, iii. 713. See

SPINE.