45, COBNHILL, E.G., AND 122, REGENT STREET, W., LONDON. 



439 



FIG/ 2 603. 



2603 Electric Light Apparatus (fig. 2603) consisting of a Six Cell Grove VBattery 



with connections and conducting wires. Electric Lamp with Carbon 

 Points ; Parabolic Reflector having suitable adjusting and | clamping 

 Screws, the Carbon Points being regulated by an Electric Magnet. 

 Price for the complete Apparatus 6 10 



2604 Dynamo Magneto Electric 

 Machine (fig. 2604). This machine 

 can be used for a variety of experi- 

 mental purposes, as a substitute for 

 the Yoltaic Battery : it will heat to 

 incandescence 12 inches of Platinum 

 wire, '01 diameter, or can be 

 arranged to rapidly decompose 

 water .... 28 



2605 Dynamo Magneto Electric 

 Machine, requiring ^ Horse Power ; 

 can be driven either by Steam or 

 Gas Engine to light five 20-Candle 

 Power Incandescent Lamps 



15 10 



2606 Ditto ditto to light twenty 

 20-Candle Power Lamps, requiring 



3 Horse-power Engines 50 Fm. 2604. 



The above prices do not include either Steam or Gas Engines. For the price of 

 Steam Engines and Gas Engines see Mechanical Section at the end of the Book. 

 Estimates for larger Dynamos and Engines supplied upon application stating the 

 requirements. 



