Work of, 247.

Normal temperature, 269.

Nosebleed, 58.

Nucleoplasm, 14.

Nutrients (_see_ Foods),
Composition of, 135.
Relative quantity needed, 123.
Routes taken by, 175.
Tests for, 136.

Nutriment, storage of, 177-180.

Olfactory stimulus, 347.

Opsonins, 34.

Optic thalami, 289.

Orbit, 373.

Organ, defined, 7.

Organism, defined, 19.

Organization, defined, 10.

Osmosis, 72.
At the cells, 72.
To illustrate, 75.

Ossein, 218.

Overstudy, 211.

Oxidation, defined, 106.

Oxygen, 104-117.
Combined, 105, 113.
Free, 105, 113.
How it unites, 105.
Main uses of, 108.
Movement a necessity, 106, 108, 115.
Movement in body, 106, 108, 115.
Nature of, 104.
Passage of, from cells, 110.
Passage of, through blood, 109.
Passage of, toward cells, 109.
Preparation of, 113.
Pressure, 109.
Properties of, 113.
Purpose of, in the body, 106.

Oxyhemoglobin, 27.

Pacinian corpuscles, 342, 343.
To demonstrate, 348.

Pancreas, 155.

Pancreatic juice, 155.

Papillae, 266.

Patent medicines, 166.

Pelvic girdle, 226.

Pepsin, 149.

Peptones, 149, 176.

Pericardium, 41.

Perilymph, 361.

Perimysium, 245.

Periosteum, 218.

Peritoneum, 180.

Perspiration, 207.

Pharynx, 145.
Openings into, 145, 146.

Phosphorus, 135.

Phrenic nerve, 302.

Physiological salt solution, 38.

Physiology, defined, 2.

Pia, 299.

Pigment granules, 266.

Pinna, 358.

Pitch, detection of, 365.

Pivot joint, 232.

Plasma, 25, 29.

Pleura, 84.

Plexus, 281.

Pneumonia, 94.

Pons, 290.

Pons Varolii, 290.

Portal vein, 154.

Primitive sheath, 284.

Proteids, 161.
Circulating, 179.
Kinds of, 118.
Purposes of, 119.
Supplied by, 125.
Tests for, 135, 136.
Tissue, 179.

Proteoses, 149, 176.

Protoplasm, 14.

Protozoa, 394.

Ptyalin, 145.

Public sanitation, 396.

Pulp cavity, 143.

Pupil, 375.

Pure food law, 128.

Pus, 28, 29.

Pyloric orifice, 147.

Pyramids, 202.

Quarantine, 406.

Radius, 227.

Reaction time, to determine, 323.

Reading glasses, 386.

Receptacle of the chyle, 68, 170.

Rectum, 158.

Red corpuscles, 25.
Disappearance of, 27.
Function of, 26.
Origin of, 27.
To examine, 38.
To prepare models of, 39.

Red marrow, 219.

Reenforcement of sound, 352, 356, 368.

Reflection, kinds of, 371.

Reflex action, 308.
Diagram illustrating, 310.