CH. V] LANTERN WITH ALCOHOL LAMP AND MANTLE 131 



216. Lighting the lamp. (i) Place the lamp in a metal tray; 

 put a mantle in position over the burner, and burn it off as for a new 

 gas mantle. 



(2) Place the heater or torch in position under the burner 

 (fig. 73 L) . Wet the torch well with strong alcohol, using a pipette. 

 Sometimes the torch is saturated with alcohol by pouring the 

 alcohol upon it from a bottle before it is put in place under the 

 burner. This is usually wasteful, as some alcohol is almost sure 

 to be spilled. 



FIG. 73. ALCO-RADIANT, SHOWING THE PARTS. 

 (Cut loaned by Williams, Brown & Earle). 



BM The mantle. 



BS The gas burner for the volatilized alcohol. 



L H The heater to start the volatilization. 



S The handle for opening and closing the air valve of the burner. 



R Valve for turning on and off the alcohol supply. 



W The tank holding the alcohol supply. 



Connection for the pressure tube. 



Rubber bull) for forcing air into the alcohol reservoir. 



The round 



object in the course of the rubber tube is an air reservoir to make the pressure 

 steady. 



