152 SCIOPTICON MANUAL. 



directly from the bracket, it is sometimes called oxy- 

 hydro-calcium. To produce the light more generally 

 known as the oxy-hydrogen, both gases are forced upon 

 the lime from reservoirs under equal pressure, and 

 through a common jet. 



In absence of well established and distinctive terms, 

 we seem obliged to fall back upon the only elementary 

 distinctions, as alcohol, house gas, and mixed jet; or 

 simply Nos. 1, 2, and 3. 



THE ALCOKOL. BURSTER. 



The lime light produced by a jet of oxygen gas through 

 an alcohol flame, as now used with improved effect in 

 the Sciopticon, is suited, next to the Sciopticon oil lamp, 

 to the widest range of circumstances. 



Fig. 30. 



The alcohol fountain at the side of the Sciopticon is 

 shown in the above cut as drawn back, so as to be partly 

 seen. It is connected with the triple blow-pipe at the 



