On the use of Incandescence Lamps, &c. By C. H. Steam, 33 



energy per second, the probability seems rather remote ; and both 

 for convenience and economy, the modified Leclanche cells carry 

 off the palm at present, so far as microscopical illumination is 

 concerned. 



Fig. 4. 



Fjg. 5 



Fig. 6. 



Ser. 2.— Vol. III. 



