PART I. 

 Ikiitow at ti)e ^nfimtion ants SdnprobemmtS of t^t iRicxoicoft. 



CHAPTER I. 



PAGE 



History of the Microscope . . . . . .1 



CHAPTER II. 



Mechanical and Optical Principles involved in the Construction of the 

 Microscope — Lenses — Mode of Estimating their Power, <fec. — Achro- 

 matic Lenses — Magnifying Power — Wollaston's Doublet — Codding- 

 ton's Lens — Ross's Simple and Compound Microscopes — ^Baker's 

 Microscopes — Micrometers, &c. . . . . .12 



CHAPTER III. 



Preliminary Directions — lUamination — Accessory Apparatus — Achro- 

 matic Illuminator — GUlett's Condenser — Preparing and Mounting 

 Objects — Injecting — Chemical re-agents — Collecting Objects — The 

 Camera Lucida — Polarised Light — Binocular Instrument — Photo- 

 graphic Drawing . . . . . . .S3 



PART II. 



CHAPTER I. 



Protozoa — Rhizopoda — History of Infusorial Animalcules — Monads — 

 Diatomacese, Fossil Infusoria, Vorticellidae,Stentor8, Rotifera, Flos- 

 cnlaridae, Xanthidia — Sponges . . . . .129 



