CONTENTS. 



CHAPTER T. 



Paso 



The Simple Microscope - ■*' 



Pocket magnifiers '"• 



Coddington lens *" 



Author's dissecting microscope - ^^ 



Watchmaker's eye-glass - - - ib. 



Powell and Lealand's dissecting microscope 52 



Lister's method of mounting pocket magnifier - 54 



Ross's portable dissecting microscope - 55 



Slack's dissecting microscope - 56 



Ross's simple and compound microscope - 59 



Valentine's microscope - "^ 



Smith and Beck's simple microscope 63 



Magnifying powers employed 64 



WoUaston's doublet - - 65 



Holland's triplet ib. 



CHAPTER II. 



Compound Microscope - - 67 



Mechanical arrangements . - - 68 



Messrs. Powell and Lealand's large achromatic microscope 74 



smaller microscope - - 77 



portable microscope 78 



Ross's compound microscope 81 



portable compound microscope 84 



Messrs. Smith and Beck's large achromatic microscope 87 



Mr. Alfred White's lever stage - 89 



Messrs. Smith and Beck's smaller compound microscope 90 



achromatic microscope for students 91 



Varley's microscope - - 93 



Dancer's microscope - - 96 



PiUischer's microscope 98 



King's microscope 100 



Foreign microscopes - 101 



Sehiek's microscope 102 



Pistor's microscopes 103 



Chevalier's microscope - 105 



Oberhauser's microscope - 106 



N"achet's microscope - 107 



