FARM SANITATION 



513 



must convert the liquid into gas before it is burned. Gaso- 

 line lamps are either portable, with an individual generator, 

 or are connected to a system, with a common generator for the 

 entire system. Again, certain gasoline plants require a 

 special grade of light gasoline which is vaporized upon mixing 

 with air. 



Gasoline Lamps. Gasoline lamps are not as safe as kero- 

 sene lamps, yet when properly handled should not be danger- 



The efficiency of lamps. 



ous. They should be filled only by daylight, and care should 

 be taken not to let the gasoline become exposed to the air 

 either through a leak or by spilling. A gasoline lamp, unless 

 of the vaporizing type, requires some time for starting, and 

 must be heated before the gasoline can be generated. While 

 it is burning, there is usually a hissing noise which is very 

 disagreeable. Gasoline lamps are universally mantle lamps, 

 and for this reason are very efficient. The most efficient 

 lamps are those which furnish the liquid to the lamps under 

 pressure. The gasoline lamp consumes the oxygen of the 

 air and heats it much as the kerosene lamp. 



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