100 Prof. Magnus on the Propagation of Heat in Gases. 

 Transmission of the Heat of a Gas-flame {continued). 



Blackened tube. 



Unblackencd tube. 



1 Position 





Ob- | 

 served i Diffcr- 





Position 





Ob. 

 served 





No. 



of equi- 





No. 



of equi- 





Differ- 









deflec- ence. 









deflec- 



ence. 





needle. 





tion. 





ncedle. 





tion. 





Carbonic acid under 1 atm. pressure. 



jVa 



~ii -^ 



177 



18-0 



Va 



+0-2 

 0-5 

 0-5 

 07 

 07 



! 



+0-35 600 



5965 





-0-5 

 00 

 00 



-0-35 



177 



180 





0-5 60-2 



597 





-0 25 



177 



17-95 





6 60-2 



59-6 





00 



180 



180 





07 60-2 



59-5 







180 



208 



Mean 

 Corres 





59-6 



Corres 



jonding to ... 



tonding to ... 



2180 



V:Va = 221: 20-8 = 100: 94U 



V:Va = 238:218 = 10O:91-59 



Atmospheric air under 1 atm. pressure. 



VI 





 



4-0-2 

 

 



0-0 2375 



2375 



VI 



+0-7 



+ 1-2 



1-2 



1-2 



1-2 



+ 10 



630 



620 





+01 j 240 

 1 1 242 



23-9 

 241 





1-2 

 1-2 



630 

 630 



61-8 

 618 





1 240 



240 





1-2 



630 



61-8 







23-9 

 308 



Mean 

 Corres 





61-8 



Corres 



jonding to 



jonding to ... 



2650 





Carbonic oxide under 1 atm. pressure. 



Via 



+ si!+» 2 



£ 0-9 



n-9 v * 



™ ! JJ 



v u 



230 



228 



Via 



oo | . L. ak 



4-0-5 +°' 2 ° 

 0-5 + ' 50 



07 085 



60 25 



600 





23 



22-8 





60-3 



59-8 





230 



229 





6075 



600 





22-5 



225 





6075 



59-9 



Mean 2275 



Mean 599 



Corresponding to ... 29-00 



Corresponding to ... 224 



VI: Via = 30-8: 29 = 100: 9415 



VI : VI a = 265 : 224 = 100: 84 52 



Atmospheric air under 1 atm. pressure. 



VII 



+ 0-7 

 07 

 05 

 0-5 

 05 



+07 



167 ! 160 



VII 



-0-5 

 -0-2 

 -0-2 

 -0-2 

 -0-2 



-0-35 



60-5 



60-85 





06 



167 ! 16 I 





-0 2 



60-7 



609 





05 



16-5 160 





-0-2 



60 7 



60 9 





5 



16-5 16 



i 





-0 2 



607 



609 







160 

 171 



Mpin 





609 





Corres 



)onding to ... 





Corresj 



rauding to ... 



245 



