DD'l 



Drs. J. T. Bottomlev and J. C. Beattie on 



Table IV. 

 Pt 3 and Pt 4 . Diameter of Wire, O025 cm. 



Temperature Ener gy lo3t b * v Ener ?y lost h 7 R atio 



A c bright wire, sooted wire. sooted/bright. 



150 



0-7 



33 



4-71 



200 



11 



5-9 



5-4 



250 



1-8 



92 



5-1 



300 



2-7 



135 



5 



350 



3-7 



18-6 



50 



400 



4-9 



241 



4-9 



450 



64 



31-0 



49 



500 



80 



387 



4-84 



550 



101 



46-5 



4-6 



600 



121 



54-0 



4-5 



650 



159 



675 



42 



750 



21-8 



86-5 



4-0 



Table V. 

 Pt 5 and Pt G . Diameter of Wire, 015 cm. 



Temperature. 



Energy lost by Energy lost by 

 bright wire. sooted wire. 



Ratio 

 sooted/bright. 



200 

 250 

 300 

 350 

 400 

 450 

 500 

 550 



10 

 13 

 2-0 

 32 

 47 

 7-0 

 99 

 ]4-9 



4-5 

 5-7 



8-7 

 13-0 

 18-8 

 27-4 

 37-8 

 57'0 



4-5 

 4-4 



4-35 



406 



40 



39 



3-8 



3-8 



