TABLE OF CONTENTS. 



INTRODUCTION. 

 History of the Microscope and Microscopic Researcli, 



CHAPTER I. 

 Optical Principles of the Microscope, 



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33 



65 



Draw-Tube, . 

 Erector, . 

 Micrometer, . 

 Goniometer, 

 Indicator, 

 Camera Lucida, . 

 Object-Glass Holder, , 



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 12Y 



