ILLUSTRATIVE ENGRAVINGS. 



PAGE 



Snow Crystals, . . . . . . 98 



Section of a Leaf Magnified, , . . .114 



Section of a Pistil Magnified, . . .114 



Gnats Emerging, . . . . . .123 



Sting of the Honey Bee Magnified, . . . .126 



Poison Fang and Rattles of the Rattlesnake, . .129 



The Bird of Paradise, ... .130 



The Manis, . . . ... . . 137 



Skull of the Beaver, . . . . . .137 



Tail and Feet of the Beaver, . ... . .138 



Skull of the Orang-Outang, . , . . . .140 



Foot of the Orang-Outang, ...... 141 



Brain and Nerves of Man, . . . . . .163 



The Vital System, . . . . . . .163 



The Brain Exposed, . . . . . .165 



Muscular Fibre, ..... .167 



Transverse Section of the Neck, ..... 167 



Muscles of the Face, .... .167 



Muscles of the Eyeball, . . . . . .168 



Pronators of the Fore-Arm, ...... 169 



Tendons and Arteries of the Hand, . ., . . . 1 70 



Termination of Muscular Nerves, . . . . .171 



Longitudinal Section of the Brain, . . . . 173 



Brain and Nerve Matter Magnified, . . . , .174 



Minute Nervous Structure, . . . . . .175 



Nervous System of Insects, . . . ... .176 



Ganglion of a Sympathetic Nerve, . . . . .180 



Pores, Papillae, and Neryes of the Skin, . . . .182 



Blood Vessels in Papillae of the Tongue, . . . .184 



Labyrinth of the Ear, . 188 



Section of the Eye, . . . . . . .190 



Organs of the Oyster, . . , , . .194 



