-440 A. L. Day and J. K. Clement — Gas Thermometer. 



In Furnace IV. 

 Temperature Distribution along the Bar. 



Left 



Middle 

 (Corrected 



Eight 















12 cm 



10 cm 



5cm 



Temperature) 



5cm 



1()cm 



12cm 



- 3° 



- 2° 



0° 



299-1° 



- 1° 



- 4° 



- 5° 



— 5 



— 3 







399-2 



— 1 



— 4 



— 6 



— 9 



— 5 



— 1 



497-0 



— 1 



— 5 



— 7 



— 14 



— 9 



2 



598-3 







— 3 



— 6 



-16 



— 9 



— 3 



648-0 



+ 1 



— 1 



— 5 



— 19 



— 12 



— 4 



709-5 



+ 3 







— 4 



— 21 



— 15 



— 4 



748-7 



+ 4 



+ 2 



— 3 



— 25 



— 18 



— 6 



799-1 



+ 6 



+ 4 



— 1 



-30 



— 22 



- 7 



846-1 



+ 7 



+ 6 



+ 1 



-30 



— 22 



— 8 



900-4 



+ 8 



+ 9 



+ 4 



— 36 



-26 



— 10 



949-6 



+ 10 



+ 13 



+ 7 



— 36 



-27 - 



— 11 



1000-5 



+ 12 



+ 17 



+ 11 



Date 



Corrected 

 Temperature 



Observed 



'L 



Calculated 



Obs.— Cal. 



Apr. 



17, 1908... 



299-1° 



•002763 



•002755 



+ 8' 







399-2 



•003750 



•003730 



+ 20 







497-0 



•004697 



•004708 



— 11 







598-3 



•005702 



•005748 



— 46 







6480 



•006265 



•006268 



— 3 







709-5 



•006889 



•006921 



— 32 







748-7 



•007344 



•007343 



+ 1 







799-1 



•007897 



•007890 



+ 7 







846-1 



•008423 



•008407 



+ 16 







900-4 



•009018 



•009011 



+ 7 







949-6 



•009585 



•009566 



+ 19 







1000-5 



•010160 



•010146 



+ 14 



E< 



luation used 



for the " cal( 



julated " exp 



ansions, 





X— (8814-1Z + 1-3260£ 2 )10- 9 



The mean of the equations derived from the observations in 

 the four furnaces, each weighted according to the number of 

 observations in that particular series, is 



A=(8841£ + 1-306^) 10- 9 



which is the equation used to compute all the gas-thermometer 

 observations. 



