CONTENTS. 



Page 



Introductory Remarks 13 



CHAPTER 



I. History of the Microscope - 15 



II. Construction of Microscopes 18 



Single Microscopes 20 



Stanhope Lens . . . . . .21 



Coddington's Lens 22 



Compound Achromatic Microscope . . .25 



Gould's Microscope 29 



Medical Achromatic Microscope 30 



Method of measuring the Magnifying power of Microscopes 31 

 Micrometer Eye-Piece . . . .32 



III. On the Method of Viewing and Illuminating Microscopic 



Objects ...... 33 



Transparent and Opaque Objects . . .36 



On Viewing Objects by Polarized Light . . 36 

 Test Objects . .... 38 



IV. Microscopic Objects and their Mounting . . 41 



Transparent Objects 42 



Mounting Opaque Objects . . . . . .44 



Mounting in Preservative Fluids ... 44 

 Goadby's Method . .45 



