Prof. Magnus on the Propagation of Heat in Gases. 99 

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



Blackened tube. 



Unblackened tube. 





Position 









Position 









No. 



of equi 

 librium 





served 



Differ- 



No. 



of equi- 





served 



Differ- 





of the 





deflec- 



ence. 





of the 





deflec- 



ence. 





needle. 





tion. 







needle. 





tion. 





Oxygen under ] atm. pressure. 



Ilia 



+0-5 



+0-2 

 00 

 00 



+0-2 



+6-3 



11-5 



11-2 



Ilia 



+ 1- 

 1-25 

 0-75 

 10 

 0-0 



+ 11 



590 



57-9 





+0-1 



110 



10-9 





10 



59-25 



58-25 





00 



110 



110 





0-8 



58-75 



57-9 





+0-1 



110 



10-9 





05 



58-5 



58 



Mean 11-0 



Mean 58-0 



Corresponding to ... 11-0 



Corresponding to ... 193-0 



III : II[a = 110 : 110=100 : 100 



III : IIIa= 193 : 193 = 100 : 100 



Atmospheric air under 1 atm. pressure. 



IV 



+0-5 



+0-5 



0-7 



07 



0-7 



+0-5 



16-7 



16-2 



IV 



+0-5 



+ 1-0 



10 



10 



10 



+075 



61-0 



60-25 





0-6 



16-7 



161 





10 



61-2 



60-2 





07 



16-7 



160 





10 



61-2 



60-2 





0-7 



17-0 



163 





1-0 



61-2 



60-2 







1615 

 17-40 



Mean 

 Corres 





60-2 



Corres 



ponding to ... 



Donding to ... 



230-0 



Hydrogen under 1 atm. pressure. 



IV« 



+0-7 

 0-5 

 0-5 

 0-5 

 0-5 



+0-6 



16-7 



161 



IVa 



+ 1-0 



07 

 10 



0-7 

 07 



+0-85 61-0 



6015 





0-5 

 05 



16-5 

 16-7 



160 

 16-2 





+0-85 6 10 

 +0-85 60-7 



6015 



59-85 





0-5 



16-5 



16-0 





070 60-5 



59-8 



Mean 16-07 



Mean 600 



Corresponding to ... 17'2 



Corresponding to ... 226*0 



IV: IVa-174: 17-2-100: 98-85 



IV :IVa = 230: 226 = 100: 98-26 



Atmospheric air under 1 atm. pressure. 



V 



-1-2 



-10 



0-7 



0-5 

 0-5 



-11 



177 



18-8 



V 



+0-5 



+0-7 



0-5 



0-5 



0-5 



+0-6 



610 



60-4 





-0-8 



180 



18-8 





+0-6 



61-0 



60-4 





-0-6 



18-2 



18-8 





0-5 



61-2 



607 





-0-5 



18-5 



190 





0-5 



61-2 



607 







18-8 

 221 



Mean 6055 





Corres 



ponding to ... 





Corres 



Donding 



to ... 



238-0 



H2 



