IV 



TABLE OF CONTENTS. 



CHAPTER XVII. 



ANNULOSA OR WORMS. 



ENTOZOA, 

 TURBELLARIA, 



PAGE 



193 

 194 



ANNELIDA, . 



Development of Annelids, 



PAGE 



, 195 

 197 



CHAPTER XVIII. 



CRUSTACEA. 



PYCNOOONIDA, . . . .205 

 ENTOMOSTRACA, . 207 



SUCTORIA, 212 



ClRRHIPEDA, . 



MALACOSTRACA, 



Metamorphosis of Decapods, 



213 

 214 

 215 



CHAPTER XIX. 



INSECTS AND ARACHINDA. 



Number and variety of Objects af- 

 forded by Insects, . . . 21 8 

 Structure of Integument, . .219 

 Scales and Hairs, .... 220 

 Eyes, . . . . . .229 



Antennae, 232 



Mouth, 233 



Circulation of the Blood, . . 237 

 Respiratory Apparatus, . . . 238 



CHAPTER XX. 



VERTEBRATED ANIMALS. 



Elementary Tissues, . . . 252 

 Cells and Fibres, . . .253 



Bone, 255 



Teeth, . . . . .258 

 Scales of Fish, . . . .261 



Hairs, 263 



Featkers, 266 



Hoofs. Horns, etc., . . . 267 



Blood, 267 



White and Yellow Fibres, . 271 

 Skin, Mucous and Serous Mem- 

 branes, ..... 274 



Epidermis, 



Pigment-Cells, . 



Epithelium, 



Fat, . . 



Cartilage, .... 



Glands 



Muscle, .... 



Nerve, .... 

 Circulation of the Blood, 

 Injected Preparations, . 

 Vessels of Respiratory Organs, 



275 

 275 



276 



277 

 278 

 279 

 281 

 284 

 286 

 292 

 299 



CHAPTER XXI. 



APPLICATION OF THE MICROSCOPE TO GEOLOGY. 



Fossilized Wood, Coal, . . .302 

 Fossil Foraminif era; Chalk, . . 304 

 Organic Materials of Lime-stones, 308 



Fossil Bones, Teeth, etc., . .310 

 Inorganic materials of Rocks, .312 

 Nachet's Mineralogical Microscope, 315 



CHAPTER XXII. 



INORGANIC OR MINERAL KINGDOM. POLARIZATION. 



Mineral Objects, 

 Crystallization of Salts, 

 Molecular Coalescence, 



318 

 319 

 323 



Organic Structures suitable for 



Polariscope, .... 323 



Micro-Chemistry, .... 326 



APPENDIX. 



An- 



" Numerical Aperture" and 



gular Aperture, " .... 327 

 Watson's New Model Microscopes, 331 



Swift's "Wale" Model Students' 



Microscope, 



Nachet's Objective-carrier, 



332 

 333 



