Bctbomley. 
Phil. Troon* ■ 188 7. A. Plate 2 6. 
Curve showing for Temperature 408°C- -the* -ratio between* the, -rote of loss of heat with* oar -present* or* varLaios pressures 
& the rote of loss at the highest voucuttn* proouroible* with* the SprengeLPivnvp the rate of loss at* highest, vamuv* being taken* a*s 
-unity ■ 
We s fc ,Tfewma.TL& C litis. 
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Curves shxrwyug ErniassimtL 
Ft Pt % Ptj SchLeL*errrux*cher:B 5 
es obtaitueob by 
one ofnvy own* 
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