846 



Voltaic Electricity. Section 1: Galvanic Sources of Current. 



No. 60739 



60 741. 1 : 4. 



60 740. 3 : 4. 



60743. 1 : 3. 



60 744. 1:5 



60.739. Small Projection Cell (Kolbe's), Figure (Kolbe-Skcllon, Introduction to Elec- 

 tricity, Part II, Fig. 87), for charging with dilute sulphuric acid (1 : 10) 



60.740. Small Constant Cell, as suggested by Kolbe (Kolbe-Skellon, Introduction to Elec- 

 tricity, Part II, Fig. 92), on wood base, Figure 



The cell is a sin nil U-shaped Daniell cell, the centre part of which at the lie-nil is pliifij:<'<l 

 with glass wool so that the liquids slowly ooze through without, however, becoming mixed if tin n 11 

 is kept still. 



60.741. Small Constant Battery, Figure, 5 small Daniell cells as per last item mounted 

 on a board . 



60.742. 10 Batteries of preceding construction, for high voltages 



60.743. Zinc-Copper Cell, with thermometer between electrodes, F i g 11 r e. for demonstrating 

 internal heating (M. P. 10 th edn., IV, 1, Fig. 298). Dilute sulphuric acid (1 : 10) is used 

 as electrolyte 



Cl. 2223. 3465, 

 5690, 5689. 



S. (I. 

 i 0. .S. 



0. :>. (I 



0. 16.0 

 7. 10.0 



0. (i. I) 



5793 b, 



