45, CORN HILL, B.C., AND 122, REGENT STREET, W., LONDON. 463 



FIG. 2805. 



FIG. 2807. 



FIG. 2808. 



2808 Magneto Electro Exploder, improved arrangement, in mahogany case, for 



firing Mines or Cannon by Electro-Magnetism; price according to the 

 number of charges to be fired (fig. 2808) . . 12 12s. to 26 



2809 Fuses, for use with the Exploder, Experimental, Mining, Blasting, Cannon 



and Submarine, supplied to order . . from, per dozen 5s. to 10s. 



2810 Induction Coils, specially arranged for blasting purposes, where a number of 



charges are required to be fired simultaneously, in stout case . 13 



2811 Copper Wire, insulated with Gutta Percha, for use with above, per 100 yards. 



Price variable, from 1 Is. 



For Prices of Copper Wire covered with Cotton and Silk, see ante, page 455. 



2812 Vertical Action Electric Bell, (fig. 2807), either trembling or single 



stroke, same price as horizontal action . . . . . 



2813 Electric " House " Bell, specially arranged as an efficient House or 



Warehouse Bell, with 3-inch loud tone G-ong, nickel plated, in 

 polished case, or fitted with continuous ringing action for Burglar 

 and Fire Alarm each ( 12 6 



