24 



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



Table IX. 



Platinum Thermometer in Steam. 



Time. 

 Jan. 23. 



Coils. 



Bridge-Wire 

 Reading. 



Temperature 

 of Coils. 



Baro- 

 meter 



(corr.). 



R'. 



(Box 



No. 6.) 



4.36 



4.43 



4.46 



4.51 



4.55 



4.59 



5.6 



5.9 



0, D, F, H, PI = 365 

 Coil cor. ... —179 



C, D, F, FI = 360 

 Coil cor. ... — -171 



C, D, G, H, FI = 355 

 Coil cor. ... — -164 



C, D, G, FI = 350 

 Coil cor. ... --156 



B.W. Readg. -6-466 

 Cal. cor. + -106 

 Zero cor. —'078 



B.W. Eeadg. -6-469 

 Cal. cor. +-106 

 Zero cor. — -078 



B.W. Readg. -1-394 

 Cal. cor. + 023 

 Zero cor. —'078 



B.W. Readg. -1-397 

 Cal. cor. + 023 

 Zero cor. —"078 



B.W. Readg. +3674 

 Cal. cor. -061 

 Zero cor. — -078 



B.W. Readg. +-3676 

 Cal. cor. - -061 

 Zero cor. —'078 



B.W. Readg. 4-8752 

 Cal. cor. —'146 

 Zero cor. - 078 



B.W. Readg. 4-8750 

 Cal. cor. --146 

 Zero cor. — 078 



20-32 

 Cor. 4- O30 



20-38 

 Cor. +035 



20-40 

 Cor. 4- -037 



20-42 

 Cor. +-039 



20-45 

 Cor. 4-042 



2047 

 Cor. +044 



20-49 

 Cor. +046 



20-49 

 Cor. +046 



mm. 

 769-40 



a 



769-45 



769-40 

 769-35 

 769-30 



358-413 

 358-415 

 358-417 

 358-416 

 358-413 

 358-417 

 358-418 

 358-416 







Mean 



769-39 



358-416 







R' =s 358-416 mean box-units (Box No. 6) when the barometer is 

 76939 mm. 



"Hence mean ~ = 0-99711. 

 8t 



« Now ^ at 100° = 0-985. 



ot 



.-. SR' at 100° = -9971 x -985 = -0-9821, 

 .-. 8W for 0°-344 = -9821 x '344 = 0-338, 

 .-. R 2 = 358-416-0-338 = 358-078. 



