Ratio of the Specific Heats for Air and Steam. 237 

 Table V.— Series II. 



. 1\ P-2 £=!. . 



in cm. in cm. Kick of y i 7~ L 



water at | water at galvanometer, uncorrected y 



0° C. ; 0° C. for kick corrected. 



of ffalv. 



383-10 



378-49 



1084-9 



1029-0 



6 



•2290 



•2386 



383-20 



378-49 



1084-2 



1029 



no kick 



•2372 



— 



383-20 



378-72 



1082-5 



10290 



no kick 



•2320 



— 



383-00 



378-48 



1091-0 



10350 



4 



•2255 



•2319 



383 00 



378-34 



1091-6 



10350 



4 



■2302 



2366 



383] 



378-51 



1089-5 



10350 



1 



•2349 



•2365 



383-90 



379-47 



10982 



10430 



1 



•2248 



•2364 



' 383-90 



379-08 



1100-4 



1043-0 



no kick 



•2355 



— 



383-90 



379-35 



1098-7 



1043-0 



no kick 



■2308 



— 



, 383-90 



379-50 



1099-1 



10430 



3 



•2200 



•2248 



! 38390 



379-44 



1098-9 



10430 



4 



•2243 



•2307 



383-90 



379-32 



1098-8 



1043 



no kick 



•2302 



— 



383-90 



37922 



1099-7 



1043 



1 



•2320 



•2336 



383-90 



37910 



1100-6 



\ 1043-0 



no kick 



•2343 



— 



383-90 



379-42 



1100-6 



1045-0 



1 



•2200 



•2282 



383-90 



379-38 



1100-3 



1045 



1 



•2290 



•2306 



383 90 



I 



379-28 



1101-5 



1045-0 



no kick 



•2302 



~ 





For these experiments t = 0*50 second. 



Mean value of = '2328, 



7 

 whence 7=1*303. 



The values of y obtained in these two series of experiments 

 are^ given for clearness 



r in seconds. y. 



Series 1 0*67 1*307 



Series II 0'50 1*303 



The agreement of these observations w r as not sufficiently 

 close to necessitate the application of the small correction for 

 radiation applied in the air-experiments (correction (2) above). 

 An attempt was made to apply a correction for the heating 

 up of the steam round the thermometer in the time r (cor- 

 rection (1) above). The discrepancies were, however, found 

 to be too great to render it possible to plot a curve and 

 extrapolate to the value t=0. 



It is worthy of mention that the movement of the galva- 

 nometer needle was more rapid in these experiments than in 

 those with air, indicating a quicker rate of heating up of the 

 thermometer. This indication was further confirmed by a 

 third series of experiments which was taken, for which r was 



