ANALYTICAL INDEX. 1021 
Musculur System (continued). Neck (continued). 
as apparent in the Nematoneura, 534 
in Celelmintha, 534 
in Bryozoa, 535 
in Rotifera, 535 
in Epizoa, 536 
in Echinodermata, 537 
Encrinus, Comatula, 537 
Asterias, Echinus, 537 
Holothuria, Siponculus, 537 
in the Homogangliata, 537 
in Annelida, 538 
in Myriapoda, 538 
in Insecta, 538 
in Arachnida, 539 
in Crustacea, 540 
in the Heterogangliata, 540 
in Gasteropoda, 540 
in Pteropoda, 541 
in Cephalopoda, 541 
in Vertebrata, 541 
vertebral system, 54} 
costal system, 542 
hyoid system, 542 
opercular system, 543 
muscles of the limbs, 543 
in skates and rays, 543 
in Lepido-siren, 543 
in Siren lacertina, 543 ° 
in Proteus, 543 
in Ophidia, 543 
in Sauria, 543 
muscles used in mastication, 543 
tegumentary system, 543 
vocal system, 544 
diaphragm, 544 
lingual system, 544 
ocular system, 544 
aural system, 544 
nasal system, 544 
generative system, 544 
general description of the class, 544 
classification, 545 
anatomy and physiology, 547 
alimentary canal, 549 
respiratory system, 549 
circulatory system, 549 
foramina repugnatoria, 550 
nervous system, 550 
in Scolopendra, 550 
senses, 550 
organs of generation, 551 
Ova, 553 
developement of the embryo, 553 
history of the process according to the observa- 
tions of Newport on the Julus, 553 
observations of Gervais on the growth of 
Lithobius, 560 
Neck. 
1. Muscles, 561 
a. anterior vertebral group, 561 
longus colli, 562 
rectus capitis anticus major, 561 
b, lateral vertebral group, 561 
intertransversales colli, 561 
rectus capitis lateralis, 561 
rectus Capitis anticus minor, 561 
scalenus anticus, 562 
posticus, 562 
c. depressors of os hyoides, 562 
sterno-hyoid, 563 
sterno-thyroid, 563 
thyro-hyoid, 563 
omo-hyoid, 563 
digastric, 563 
stylo-hyoid, 564 
mylo-hyoid, 564 
d. connected with the tongue, 564 
hyo-glossus, 564 
stylo-glossus, 565 
Sif A mc 565 
ingualis, 565 
genio-hyoideus, 565 
. superficial on the side of the neck, 565 
sterno-cleido-mastoideus, 565 
platysma myoides, 566 
risorius Santorini, 566 
Q. Fascie, 566 
superficial or subcutaneous areolar tissue, 566 
cervical, 568 
pre-vertebral, 569 
cervico-thoracic septum, 570 
3. Regional or surgical anatomy, 570 
superficial veins and nerves, 571 
mesial region of the neck, 572 
laryngotomy and the parts concerned, 573 
tracheotomy and the parts coneerned, 574 
crico-tracheotomy, 574 
anterior-inferior triangle, 574 
thyroid body, 575 
bronchocele, 575 
cesophagotomy, and the parts concerned, 576 
anterior-superior triangle, 576 
glandule concatenate, 577 
posterior-superior triangle, 577 
posterior-inferior triangle, 577 
subclavian artery, and operations connected 
therewith, 578 
subclavian vein, 579 
jugular vein, 579 
thoracic duct, 579 
arteria innominata, and operations connected 
therewith, 580 
digastric space, 581 
posterior pharyngeal region, 582 
relations of the sterno-cleido-mastoideus, 583 
practical observations relating to the anatomy and 
diseases of the neck, 583 
diagnosis of tumours, 583 
collateral circulation after obliteration of the main 
arterial trunks, 584 
anomalous arrangements of the cervical vessels, 
585 
remarks on the veins, 585 
Nervous System, 585 
general observations on the disposition and composi- 
tion of nervous matter, the nature of nervous actions, 
and the subdivisions of the nervous system, 586 
nervous matter, 586 
how disposed through the animal kingdom, 586 
chemical composition, 587 
Vauquelin’s analysis, £87 
Fremy’s method of analysis, 587 
cerebric acid, 587 
oleophosphoric acid, 587 
cholesterine, 588 
variation of the quantity of phosphorus in 
different periods of life, and its small amount 
in idiotcy, 588 
L’Heritié’s analyses of cerebral matter of in- 
fants, youth, adults, old men, and idiots, 
588 
nervous actions, 588 
mental nervous actions, 588 
actions of perception, 588 
common sensibility, 588 
special sensibility, 589 
actions of emotion, 589 
physical nervous actions, 589 
contraction of the iris occasioned by the sti- 
mulus of light, 589 
deglutition, 589 
excitement of the respiratory muscles by the 
sudden application of cold to the surface of 
the body, 589 
reflex action, 590 
anatomical subdivision of the nervous system ;—brain, 
spinal cord, and ganglions, 590 
nerve, 591 
structure of cerebro-spinal nerves, 591 
neurilemma, 591 
ultimate nervous fibre, 591 
tubular membrane, 591 
white substance of Schwann, 592 
flattened band of Remak, 592. 
changes produced by the action of water 
and other re-agents, 592 
varicose appearance of nerve-tubes, 593 
table of measurements of nerve-tubes in 
Man and the other Vertebrata, 593 
absence of anastomoses in nerve tubes, 598 
comparison of nervous witli muscular tissue, 593 
branching of nerves, 594 
anastomosis, 594 
decussation of the primitive fibres within the 
trunk of a nerve, 594 
anastomosis of descending branch of the ninth 
nerve with the cervical plexus, 594 e 
commissure of optic nerve, 595 
anastomosis by fusion; Volkmann’s observations, 
595 
nervi nervorum, 595 
plexuses, 595 
origin of nerves, 595 
termination of nerves, 595 
in muscle, 596 . 
peripheral expansion of nerves on sentient sur- 
faces, 596 
papille of the skin, 596 
retina and optic nerve, 596 
olfactory nerves, 597 
the auditory neive, 597 
structure of the ganglionic nerves, 597 
neurilemma, 597 
ramification, 597 
peripheral distribution, 598 
plexuses, 598 
nerve-tubes, 598 
cells, 598 
elatinous fibres, 599 
difference between the structure of the sympa- 
thetic and the cerebro-spinal fibre, according to 
Volkmann and Bidder, 599 
nerves of the Invertebrata, 600 
