TABLE OF CONTENTS. 



INTRODUCTION. 



PAGE 



History of the Microscope and Microscopic Research, . . .33 



CHAPTER I. 



Optical Principles of the Microscope, . . ... 65 



CHAPTER II. 



CONSTRUCTION OF THE MICROSCOPE. 



General Principles, ........ 86 



Simple Microscopes, ....... 90 



Ross's, ......... 91 



Gairdner's, . . . . . . . . 92 



Field's, ......... 93 



Quekett's, ........ 94 



Compound Microscopes, ....... 96 



Field's, ........ 97 



Highley's, 99 



Nachet's, . . .... .. 100 



Smith and Beck's Student's, . . . . . .102 



Do. Dissecting, .... ^ .": 103 



Warington's Universal, ..... ^ . 105 



Ross's, 108 



Powell and Lealand's, . . . . . . .111 



Smith and Beck's, . . . . . . . 113 



Nachet's Binocular, . . . . . . .114 



CHAPTER III. 



ACCESSORY APPARATUS. 



Draw-Tube, ......... 116 



Erector, ......... 119 



Micrometer, . . . . . . . . .120 



Goniometer, . . . . . . . . 124 



Indicator, ......... 124 



Camera Lucida, . . . . . . . . 124 



Object-Glass Holder, .. . . . . . .127 



