SOIOPTICON MANUAL. 



181 



M ARCT'S SCIOPTICON AX TRIPLE JET. 



The condensing gas cylinder 

 occupies but a small portion of 

 the space required by a gas bag 

 with its pressure boards and 

 weights. Considering, moreover, 

 that the apparatus here illustrated 

 gives the best results with compar- 

 atively little trouble, the signifi- 

 cant heading of " Much in Little," 

 is well-deserved. 



"With oxygen in the cylinder, 

 or in a bag, we may have the 

 . 49. lime light either with alcohol or 



with gas from house gas fixtures. For the mixed jet, the 

 hydrogen must be forced from a second cylinder or bag. 



