Experiments on, 349.
Functions of, 267, 268.
Observations on skin, 278.
Skin wounds, treatment of, 275.
Skull, 225.
Sleep, 329.
Small intestine, 151.
Mucous membrane of, 151.
Muscular coat of, 152.
As organ of absorption, 173.
Parts of, 151.
Serous coat of, 152.
Work of, 157.
Smell,
Sensation of, 346.
Value of, 347.
Sneezing, 81.
Sodium, 135.
Sodium carbonate, 155.
Sodium chloride, 122.
Soft palate, 141.
Solution, 131.
Kinds of, 73.
Solution theory, 156.
Solvents, 131.
Sound,
To illustrate origin of, 367.
To show transmission of, 367.
Sound waves,
As stimuli, 331.
Nature of, 350.
Reenforcement of, 352.
To show effects of, 368.
Value of, 353.
Speech, production of, 357.
Spinal column, 223-225.
Hygiene of, 233.
Spinal cord, 280.
Protection of, 299.
Spinal nerves, 295.
Double nature of, 295.
Spitting, 403.
Spleen, 208.
Sprains, 239, 240.
Stapes, 359.
Starch, 162.
Action of, on saliva, 171.
Animal, 120.
Tests for, 136.
Steapsin, 155, 156.
Stegomyia, 403.
Sternum, 225.
Stomach, 147.
Mucous membrane of, 147.
Muscular action of, 150.
Muscular coat, 148.
Serous coat, 148.
Storage of nutriment, 177-179.
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