Muscular irritability, exhausted by re- Nitrogen, exhalation of, in respiration,

superior and inferior laryngeal, 400 Olfactory nerves, 385

Network, capillary, in Peyer's glands, Ossification of skeleton, 544

Oxalic acid, produced in urine, 302
Oxygen, absorbed in respiration, 207

state of solution in blood, 209
dissolved by blood-globules, 210
absorbed by the tissues, 212
exhaled by plants, 225

Palate, formation of, 555
Pancreatic juice, 121

mode of obtaining, 122
composition of, 123
action on fat, 123

daily quantity of, 123
Pancreatine, 68

in pancreatic juice, 123
PANIZZA, experiment on absorption by
blood vessels, 131

Paralysis, after division of anterior root
of spinal nerve, 341

direct, after lateral injury of spinal
cord, 344

crossed, after lateral injury of brain,
345

facial, 341, 391

of muscles, by sulpho-cyanide of po-
tassium, 330, 352

of motor nerves, by woorara, 353
of sensitive nerves, by strychnine,
353

of voluntary motion and sensation,
after destroying tuber annulare,
377

of pharynx and oesophagus, after
section of pneumogastrics, 401

of larynx, 402-412

of muscular coat of stomach, 411
Paraplegia, reflex action of spinal cord,
in, 351

Parasites, 434

conditions of development of, 435
mode of introduction into body,

436

sexless, reproduction of, 436-441
Parotid saliva, 93

Parturition, 534-535

Par vagum, 399.

See Pneumogastric

Patheticus nerve, 389

Pelvis, development of, 554

PENNOCK AND MOORE, experiments on
.movements of heart, 240
Pepsine, 69

in gastric juice, 108

Perception of sensations, after removal of
hemispheres, 362

comparative anatomy of, 524
formation of, in human species, 525
foetal tufts of, 527

maternal sinuses of, 527

injection of, from uterine vessels, 529
function of, 530

separation of, in delivery, 535
Placental circulation, 568, 570
Plants, vital heat of, 221

generative apparatus of, 442
Plasma of the blood, 187
Pneumic acid, 211

Pneumogastric nerve, 399

its distribution, 400

action of, on pharynx and œsopha-

gus, 401

on larynx, 402

in formation of voice, 403
in respiration, 404

effect of its division, on respiratory
movements, 406-407

cause of death after division of,
409-410

influence of, on oesophagus and sto-
mach, 411-412

destroyed, after removal of tuber Pneumogastric ganglion, 400

annulare, 377

Periodical ovulation, 465

Peristaltic motion, of stomach, 112-113

of intestine, 130

of oviduct, 450-452

of Fallopian tubes, 475

Perspiration, 271

daily quantity of, 272

POGGIALE, on glycogenic matter in but-
cher's meat, 170

Pons Varolii, 324, 327

Portal blood, quantity of fibrin in, 189

temperature of, 227

Portal vein, in liver, 279

development of, 576

Posterior columns of spinal cord, 321

Proximate principles of the first class Regeneration, of uterine mucous mem-

(inorganic), 37

of the second class (crystallizable
substances of organic origin), 47
of the third class (organic sub-
stances), 63

Ptyaline, 93

Puberty, period of, 467

signs of, in female, 472

Pulsation, of heart, 235

in living animal, 239

of arteries, 247, 248

Pupil, action of, 374, 418

brane after pregnancy, 536

of walls of uterus, 537-538
REGNAULT AND REISET, on absorption of
oxygen, 225

REID, Dr. John, experiment on crossing
of streams in fœtal heart, 583

Reproduction, 427

nature and object of, 427-429
of parasites, 434

of tænia, 438

by germs, 442

Reptiles, circulation of, 231

contraction of, after division of sym- Respiration, 197

pathetic, 423

by gills, 198

by lungs, 199

by skin, 217

Races of men, different capacity of, for Rutting condition, in lower animals, 471

Saliva, quantity absorbed by different Septa, inter-auricular and inter-ventricu-

kinds of food, 100

Salivary glands, 93

Salts, biliary, 143

of the blood, 190

of urine, 288

Saponification, of fats, 55

lar, formation of, 581

SLQUARD, on crossing of sensitive fibres

in spinal cord, 345

Serum, of the blood, 192

Sexes, distinctive characters of, 444
Sexless entozoa, 436

SCHARLING, on diurnal variations in exha- Sexual generation, 442

lation of carbonic acid, 216

SCHULTZE, experiment on generation of
infusoria, 434

Scolopendra, nervous system of, 316
Sebaceous matter, 269

composition and properties of, 270
function of, 271
in fœtus, 545

Secretion, 265

varying activity of, 267
of saliva, 93

of gastric juice, 105

of intestinal juice, 120

of pancreatic juice, 122

of bile, 153, 278

of sugar in liver, 165

of mucus, 268

of sebaceous matter, 269

of perspiration, 271

of the tears, 273

of bile in fœtus, 551

Segmentation of the vitellus, 489

Seminal fluid, 458

mixed constitution of, 462

Shock, effect of, in destroying nervous
irritability, 330

SIEBOLD, on production of tænia from
cysticercus, 440

Sinus terminalis, of area vasculosa, 505
Sinuses, placental, 527

Skeleton, development of, 543
Skin, respiration by, 217

sebaceous glands of, 269

perspiratory glands of, 271
development of, 545

Smell, ganglia of, 358

nerves of, 385

injured by division of 5th pair, 396
SMITH, Dr. Southwood, on cutaneous and
pulmonary exhalation, 272

Solar plexus of sympathetic nerve, 416
Sounds, of heart, 235

how produced, 236

vocal, how produced, 420

destroyed by section of inferior la-
ryngeal nerves, 403

of spinal accessory, 404

Sounds, acute and grave, transmitted by
membrana tympani, 421

Sensation, remains after destruction of Species, mode of continuation, 429

hemispheres, 362

Spermatic fluid, 458

mixed constitution of, 462

Spermatozoa, 458-459

movements of, 460
formation of, 461

Spina bifida, 543
Spinal accessory, 392

sensibility of, 393

communication of, with pneumogas-
tric, 400

influence of, on larynx, 404
Spinal column, formation of, 493, 543
Spinal cord, 319-340

commissures of, 320

anterior and posterior columns, 321
origin of nerves from, 319, 320
sensibility and excitability of, 343
crossed action of, 344
reflex action of, 348

protective action of, 353
influence on sphincters, 354
effect of injury to, 355

on respiration, 380

formation of, in embryo, 493, 543
Spinal nerves, origin of, 319, 321
Spleen, 173

Malpighian bodies of, 174
extirpation of, 176
Spontaneous generation, 429

proportion of, in different kinds of Tauro-cholate of soda, 146

discharged by urine in disease, 299 Thalami, optic, in rabbit, 323

Umbilical cord, formation of, 533

withering and separation of, 590

produced by metamorphosis of cys- Umbilical hernia, 548