CONTENTS. 



Optics of the Compound Microscope Frontispiece 



CHAPTER I. 



OBJECTIVES AND OCULARS. 



PAGE 



Function of the objective i 



Designation of objectives i 



Working distance of objectives 2 



Different kinds of objectives 2 



The draw-tube 4 



Angular aperture of objectives 4 



Numerical aperture of objectives 5 



Immersion objectives 5 



Variable objectives 6 



Resolving power 6 



Illuminating power 8 



Penetrating power -8 



Selecting objectives 8 



Care of objectives 9 



Function of oculars 1 1 



Negative and positive oculars n 



Eye-point 12 



Different types of oculars 13 



Care of oculars 14 



Limit of magnification 15 



CHAPTER II. 



MICROSCOPES FOR USE IN CHEMICAL LABORATORIES. 



Specifications for chemical microscopes 17 



Microscopes for general chemical microscopy 19 



Large stage microscopes 22 



Comparison oculars 23 



Comparison microscopes 25 



Hot stage microscopes 28 



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