i8 



THE ART OF PROJECTING. 



by George Wale & Co. at the Stevens Institute, Hobo- 

 ken, N. J., and called the Experimenter's Lantern, be- 

 cause of its adaptability to many kinds of experimental 

 work, as well as to the exhibition of photographic trans- 

 parencies. 



Mr. L. J. Marcy, of Philadelphia, has, in an ingen- 

 ious manner, made a lantern jet which can be used 

 with alcohol, common gas, or hydrogen, to produce the 

 lime light. He calls it the triple jet. The engrav- 

 ing (Fig. 9) shows the lantern in section. L being 

 the disk of lime, the gases ignited at w. This lantern 

 is compact, light, and has a very 

 convenient arrangement for hold- 

 ing slides, tanks, and so forth. 



The oil lanterns have various 

 names given to them by different 

 makers, such as magic lanterns, 

 lamposcopes, sciopticons, and so 



:E'ig. 10. 



on. Fig. 10 represents the new form, the Sciopticon, 

 which for simplicity, compactness, and brilliancy of 

 illumination, surpasses every other oil lantern in the 



