INDEX TO VOLUME II. 



Achromatic microscope, 237 

 Achromatic telescope, 177 

 Active molecules, 250 

 Adapter, 66 

 Air balloons, 89 

 Air thermometer, 68 

 Alembic, 63 



Ampere's rotating battery, 26 

 Apparatus for detecting poisons, 



105 

 Apparatus for detonating gases, 



38 



Apparatus for specific heat, 92 

 Aquatic insects, 246 

 Armatures for magnets, 9 

 Artificial magnet, 5 

 Astatic Needle, 7 

 Astronomical sliders, 218 



Barlow's spur wheel, 21 



Bar magnets, 5 



Barometer, 116 



Barometer scale, 117 



Beaker glasses, 64 



Beam engine, 31 



Bell engine, 34 



Bell glass apparatus, 76 



Bell glass receiver, 60 



Binding screw, 76 



Biot's reflecting polai'iscope, 198 



Blowpipes, 70 



Blow pipe and pneumatic cistern, 



85 



Bolt head, 61 

 Boiling glass, 91 

 Botanical lenses, 169 

 Botanical sliders, 221 

 Bow glass thermometer, 112 

 Box magneto-electric machine, 



58 



Boyle's thermometer, 69 

 Breast pump, 270 



Bulb ttfbes, 108 



Calorimeter. 97 



Camera lucida, 189 



Camera obscura, 186 



Chemical analysis, 106 



Chemical apparatus, 60 



Chemical furnace, 73 



Chemical tongs, 75 



Chryophorus, 91 



Circular front barometer, 120 



Circular magnetic coil, 15 



Claude's black glass mirror, 193 



Claude's Lorraine glass, 193 



Cloth prover, 173 



Color blender, 183 



Comic sliders, 221 



Common thermometer, 111 



Comparative scales, 111 



Compound blow-pipe, 82 



Compound horse-shoe magnet, 6 



Compound prism, 183 



Condensation of gases, 103 



Condensation of liquids by mix- 

 ture, 101 



Conductometer, 93 



Conductors for magnetic machine, 

 54 



Conical rain gauge, 142 



Connectors, 76 



Cooper's lamp furnace, 72 



Cooper's mercurial tube, 75 



Cosmorama, 185 



Crucibles, 70 



Culpepper's microscope, 234 



Cumming's statical thermometer, 

 147 



Cupping pump, 270 



Cylindrical rain gauge, 143 



Daguerreotype camera, 188 

 Daniell's hygrometer, 131 



