CONTENTS. 



SIMPLE MICROSCOPES. 



Purpose of the Microscope ; Kinds of Microscopes ; Magni- 

 fying Power ; Using Magnifiers ; Aberrations ; Achroma- 

 tism, ..---._ PAGES 9-13. 



THE COMPOUND MICROSCOPE. 



Description of Parts ; Base or Foot ; Pillar ; Arm ; Body ; 

 Nose-Piece ; Society-Screw ; Objectives ; Eye-Piece or 

 Ocular ; Draw-Tube ; Collar ; Coarse Adjustment ; Milled 

 Heads ; Fine Adjustment ; Stage ; Clips ; Centering- 

 Screws ; Mirror ; Mirror-Bar ; Sub-Stage ; Sub-Stage Bar ; 

 Diaphragm ; Optical Axis ; Object ; Slide ; Cover-Glass ; 

 Classification of Microscopes ; Mechanical Parts ; Stage ; 

 Mirror and Mirror-Bar ; Diaphragm, PAGES 14-25. 



OBJECTIVES AND EYE-PIECES. 



Objectives Classes ; Systems ; Angular Aperture ; Achroma- 

 tism ; Resolving Power ; Flatness of Field ; Penetration ; 

 Working-Distance; Magnifying Power ; Eye-Piece Huy- 

 ghenian ; Solid Eye-Piece ; Periscopic Eye-Piece ; Nomen- 

 clature ; Flatness of Field ; Size of Field, PAGES 26-46. 



REQUISITES FOR WORK. 



Working Table ; Room ; Light; Position of Light ; Which Eye 

 to Use ; The Ward Eye Shade ; Order ; Material, 



- PAGES 47-^51. 



HOW TO WORK. 



To Set Up the Instrument ; Centering Stage ; Illumination ; 

 Attaching High Power Objectives ; How to Work ; Dark 

 Ground Illumination; Cover-Glass; To Draw; Camera 

 Lucida How to Use It; Determining the Magnifying 

 Power, - PAGES 52-73. 



