136 



DO AND DO NOT IN CHAPTER V 



[CH. V 



Do 



1. Use a good quality of 

 petroleum (kerosene) . 



2. Keep the lamp clean, and 

 the wicks properly trimmed. 



3. Use a chimney of the 

 proper height for the flame. 



4. Turn the flame up as high 

 as possible without having it 

 smoke. 



5. The edge of the flames 

 should face the condenser, the 

 middle flame being in the axis. 



Do 



1. For gas use the best kind 

 of mantles. 



2 . Make the connections with 

 rubber tubing of good thickness 

 and quality or flexible metallic 

 tubing (fig. 60). 



Do 



1 . For acetylene use a proper 

 burner and reflector, that is, 

 one which is made by a reliable 

 house that has proved its safety 

 and excellence. 



2. Use a safe gas supply, 

 such as a house supply or a 

 prcstolite tank is best. 



Do NOT 



1. Do not use poor oil, it will 

 not give a good light, and may 

 explode. 



2. Do not let the lamp get 

 dirty or the wicks burn with 

 tails. Clean and trim. 



3. Do not use a low chimney 

 for a large, high flame. 



4. Do not turn the wicks up 

 till they smoke. Stop just 

 before that. 



5. Do not have the face of the 

 flame, but the edge toward the 

 condenser. 



Do NOT 



1 . Do not use mantles of poor 

 quality, or that are broken. 



2. Do not make connections 

 with thin or used up rubber 

 tubing. 



Do NOT 



1. Do not use an untried 

 lamp and general outfit for the 

 acetylene light. Acetylene is a 

 good servant but a cruel master. 



2. Do not try to use a make- 

 shift gas generator. The smell 

 will be disagreeable and the 

 escaping gas possibly dangerous 



