No, 'i-'Ofili. 



Resistance of Electrolytes. 



931 



62 053. 



1 : 3. 



\ 



62 356. I : 3. 



62 063. 



1 : 4. 



62 082. 1 -. (i. 



62064. 1:8. 



62 065. 1 : 2. 



62 066. 1 : 3. 



<;2,o>l. Apparatus for Determining Conductivity, after Ostwald, portable pattern, built into * l] 

 lock-up wood box, with bridge, precision resistance, 1 500 ohms, induction apparatus 

 for producing buzzing sound in sound insulating box, round-shaped telephone with 

 antiphone*, current key, and accumulator 17. 0. 



The Kohlrausch Bridge No. 62,023, p. 926, is also very well adapted for Determining the Conduc- 

 tivity of Electrolytes. 



<;_', oi;2. 3 Resistance Vessels for Electrolytes and 2 Platinised Platinum Electrodes, after Kohl- 

 rausch, Figure (M. P., 10'" Edn., IV., 1, Fig. 479; 9 th Edn., Ill, Fig. 406; Gan.- 

 Rein., Fig. 956), with tubes 8, 14 and 25 mm diameter, each vessel having a stand 4. 0. 



<;2.oi>3. Resistance Vessel for Electrolytes, after Kohlrausch, Figure, with thermometer 



and graduation on the vessel 1. 10. 



<i~',064. -- idem, after Kohlrausch, different pattern, Figure (M. P., J0 lh Edn., IV, 



1, Fig. 480; 9 th Edn., Ill, Fig. 407) 1.12.0 



fi2.065. - - id e m, after Kohlrausch, with variable capacity, Figure (W. u. E. Fig. 304) 0. 16. 



(i2,066. -- idem, after Arrhenius, Figure (W. u. E. Fig. 302), with electrodes 40 mm 

 diameter and 0.1 mm thick 



Selenium Cells and Apparatus for demonstrating the Alteration in the Resistance of Selenium 

 by Light: see "Optics" Section. 



2. 10. 



* Sec note on last 



Cl. 5892, 5449, 2484, 



2485, 2486, 2487, 2488. 



59* 



