34 Messrs. C. W. Waidner and F. Mallory on 



o 



Temperature on scale of 11801 20*447 



Correction M, to reduce to mean! n-OOfi 

 French hard-glass scale. J ~ 



Temperature on mean hard-glass"! 9(?.aa.i 

 scale. J 



Correction to hydrogen scale — 0*086 



,, „ nitrogen „ —0*076 



Temperature on hydrogen scale 

 „ „ nitrogen „ 



20-355 

 20*365 



Coils FI, C, F = 280 



Coil corrections (Table I.) + 0*026 



Temperature correction + 0*023 



Bridge-wire reading —1*015 



Calibration correction (Table II.). +0*007 

 Zero correction of bridge-wire ... —0*006 



pt 



279*035 mean box-units. 

 279*035-258*471 



xlOO 



358-231-258-471 

 = 20°-613; 

 .-. t =20°-372 (air-scale). 

 The results of the two independent series of comparisons 

 of the Platinum Thermometer with Tonnelot 11801 are given 

 in the following table (XII.). 



Table XII. 

 Comparison of Platinum Thermometer and Tonnelot 11801. 



Tonnelot 

 11801. 



Nitrogen- 

 Scale. 



Pt. Therm. 



Air-Scale. 



7°804 



7°800 



12-941 



12-941 



18-332 



18-327 



23-106 



23-114 



33-703 



33-704 



39-999 



40-001 



[Cor. to reduce 



Pt.-Air Scale 



to Paris 



Nitrogen-Scale.] 



+•004 

 •000 

 +•005 

 -•008 

 -•001 

 -•002 



Tonnelot 

 11801. 



Nitrogen- 

 Scale. 



Pt. Therm. 

 Air-Scale. 



A 



[Cor. to recUice 



Pt.-Air Scale 



to Paris 



Nitrogen-Scale.] 



10-197 



10-186 



+ 011 



20-519 



20-523 



-•004 



23-400 



23-391 



+•009 



25-568 



25-571 



-•003 



30-004 



30-005 



-001 



43-817 



43-820 



-•003 



These results are also plotted in the form of a curve in fig. 5. 



