CONTENTS 



CHAP. PAK 



I. HAIRS, FEATHERS, AND SCALES 13 



II. BLOOD 38 



III. MOLLUSCA: THEIR SHELLS, TONGUES, EYES, AND EARS . 53 



IV. SEA-MATS AND SHELLY CORALLINES 75 



V. INSECTS: WINGS AND THEIR APPENDAGES .... 86 



VI. INSECTS: THEIR BREATHING ORGANS 112 



VII. INSECTS: THEIR FEET 130 



VIII. INSECTS: STINGS AND OVIPOSITORS 147 



IX. INSECTS: THEIR MOUTHS 164 



X. INSECTS: THEIR EARS AND EYES 186 



XI. CRABS AND SHRIMPS .199 



XII. BARNACLES 221 



XIII. SPIDERS AND MITES 283 



XIV. WHEEL-BEARERS 255 



XV. WORMS 294 



XVI. SEA-URCHINS ANP SEA-CUCUMBERS 818 



XVII. JELLY-FISHES 348 



XVIII. ZOOPHYTES 868 



XIX. SEA-ANEMONES: THEIR WEAPONS 400 



XX. PROTOZOA AND SPONGES ....... 422 



XXI. INFUSORIA . , 436 



(7) 



