CONTENTS. 



CHAPTER I. 



PAGl 



Introduction ........ 1 



CHAPTER IT. 



Reflection and Refraction ... .4 



Aberrations . . . . , . . .10 



Microscopic Objectives ...... 14 



CHAPTER III. 



The Microscope .... 25 



Achromatic Condenser . . . . . .28 



Illumination . ...... 32 



The Dark Room ........ 4S 



CHAPTER IV. 



Mounting Microscopic Objects . . .. ; .54 



Section Cutting . . . . , . .64 



Staining . . . . . . . .67 



CHAPTER V. 



Wet Collodion Process . . . . . 74 



Gelatino -Bromide Emulsion 



70 



