218 POULTRY PRODUCTION 



the oil is likely to work out on the outside of the bowl and 

 up on the burner, causing fumes, and possibly a deposit of 

 soot, and smoking. 



Fig. 107 



Showing how to trim a wick to produce a round flame. 



Fig. 108 



Showing a wick trimmed so as to produce a flame with corners which 

 will cause the deposit of soot on the side of the direct heat flue, ultimately 

 causing a smoking heater. 



