J Dale ^ 



JtaHoiti fein^perature 

 jyo. of iJirfrmometer 

 Comet ed tempitraiurry 



Air 



UNDIHG WIRE. 



TURNS, 



2O0 



500 



600 



t- 



900 



tCXX) 



M<x> 

 1500 

 tOoo 

 I7DO 

 i8«X) 

 1700 



2O00 

 2100 



V njREDGE Rd'pE. 



-7^ 



r77 



UP. 



0 



<2) 



