CONTENTS 1x 
CHAPTER PAGE 
XII.— PROTECTIVE RESEMBLANCES AND MIMICRY . . . - 201 
Protective resemblance defined, 201.—General protective or 
aggressive resemblance, 202.—Special protective resemblance, 
207.— Warning colors and terrifying appearances, 212.—Alluring 
coloration, 216.—Mimicry, 218.—Protective resemblances and 
mimicry most common among insects, 221.—No volition in mim- 
icry, 222.—Color : its utility and beauty, 222. 
XITI.—TaeE special sENsES  . ‘ . ‘ P . - 224 
Importance of the special senses, 224.— Difficulty of the study 
of the special senses, 224.—Special senses of the simplest ani- 
mals, 225.—The sense of touch, 226.—The sense of taste, 228,— 
The sense of smell, 229.—The sense of hearing, 232.—Sound-mak- 
ing, 235 —The sense of sight, 237. 
XIV.—INstTINcT AND REASON . 7 5 3 : ‘ ’ . 240 
Irritability, 240.—Nerve cells and fibers, 240.—The brain or 
sensorium, 241.—Reflex action, 241.—Instinct, 242,—Classifica- 
tion of instincts, 243.—Feeding, 244.—Self-defense, 245.—Play, 
247.—Climate, 248.—Environment, 248.—Courtship, 248.—Repro- 
duction, 249.—Care of the young, 250.—Variability of instincts, 
251.—Reason, 251.—Mind, 255. 
XV.—HomEs AND DOMESTIC HABITS . . . . . . 257 
Importance of care of the young, 257.—Care of the young and 
communal life, 257.—The invertebrates (except spiders and in- 
sects), 258.—Spiders, 259.—Insects, 262.—The vertebrates, 264. 
XVI.— GEOGRAPHICAL DISTRIBUTION OF ANIMALS . 7 . . 272 
Geographical distribution, 272.—Laws of distribution, 274.— 
Species debarred by barriers, 274.—Species debarred by inability 
to maintain their ground, 275.—Species altered by adaptation to 
new conditions, 276.—Effect of barriers, 283.—Relation of species 
to habitat, 288.—Character of barriers to distribution, 288.—Bar- 
riers affecting fresh-water animals, 294.—Modes of distribution, 
296.—Fauna and faunal areas, 296.—Realms of animal life, 297.— 
Subordinate realms or provinces, 303.—Faunal areas of the sea, 
304. 
CLASSIFICATION OF ANIMALS é 5 3 ; : . 807 
GLossaRY . 7 . 3 ‘ . 7 ; F . 313 
InDEX . j . 2 ° ° . ° ° . . 319 
