946 



Voltaic Electricity. Section 5: Electrochemistry. 



62 237. 1 : 4. 



62 238. 1 . 4. 



62 236. 



62239. 1:4. 



62,2.36. Mechanical Model for demonstrating the velocity of migration of the Ions, utter 



F. Kohlrauseh, Figure (Fr. pliys. techn. II, 1, Fig. 481) 2.10.0 



62,237. Apparatus for demonstrating the migration of a drop of mercury by the inequality 



of surface tension produced electrolytic-ally, Figure, for projection 0. S. o 



62,2.38. Capillary Galvanoscope, after \Yeinhold, for projection, Figure (W. 1). Fig. 5.30 



[503]), with glass scale 0. 12. o 



62,2.3!. Capillary Electrometer, after Ostwald, Figure, vertical pattern, on stand with 



holder, mirror, microscope, throe small tube's and 4 volt Osram lamp for illuminating 2. 10. 



62,2 to. Precision Capillary Electrometer, after Ostwald, Figure, with fine universal ad- 

 justment, on stand, with holder, microscope, mirror, and illuminating device for gas 

 or with 4 volt Osram lamp. The illustration deviates somewhat from the pattern now 

 constructed 10. 0.0 



62,241. Capillary Electrometer, after Lippmann, Figure, with microscope' ((Jan. -Man. 



Fig. 651; (Jan. -Rein. Fig. 962) L5. 0. 



02,212. Electrolytic Forge, Figure (M. T. p. 299) o. <;. o 



Tin- lieaUer is filled with a 10% solution of boiling potash and the lead plate connected witli 

 the positive and the iron wire with the negative pole of a 110 220 volt network, a resistance bein^ 

 inserted. When the iron wire is immersed to a distance of a few centimetres thr end is immediately 

 rendered white hot and commences to dropoff. The current density should be approximately In amps. 

 which is not sufficient l>y far to alone render the iron wire incandescent. 



.-.ll-.'l, '...-, I, -'.'. 



