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



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



Blackened tube. 



Unblackened tube. 





Position 





Ob- 

 served 

 deflec- 







Position 





Ob- 

 served Dlffer - 

 deflec- ence - 



No. 



of equi- 

 librium 

 of the 



Mean. 



Differ- 

 ence. 



No. 



of equi- 

 librium 

 of the 



Mean. 





needle. 





tion. 







needle. 





tion. 



Olefiant gas under 1 atm. pressure. 



IXa 





 -0-2 

 -0-2 











-01 



140 



141 



IXa 



+0-5 

 0-5 

 0-5 

 0-5 

 0-5 



+0-5 



58-5 



58-0 





-0-2 



13-7 



139 





0-5 



58-5 



58-0 





-01 



13-5 



136 





0-5 



58-2 



577 









13-7 



137 





0-5 



58-2 



57-7 



Mean 13-8 



Corresponding to ... 13 - 8 



Mean 

 Corres 





57-85 



ponding to ... 



1920 



IX: IXa = 210: 13-8 = 100:6571 



IX: IXa =273 = 192 = 100: 70-33 



Atmospheric air under 1 atm. pressure. 



X 



+ 1-0 

 + 1-2 















+ 1-1 



27-5 



26-4 



X 



+0-75 

 0-5 

 00 

 0-5 

 0-5 



+0-6 



65-0 



64-4 





+0-6 



270 



264 





0-25 



65-0 



64-75 









26-2 



26-2 





0-25 



64-7 



64-45 









265 



26-5 





0-5 



64-7 



64-2 



Mean 26-4 



Mean 64-45 



Corresponding to ... 35-8 



Corresponding to ...3340 



Olefiant gas under 1 atm. pressure. 



Xa 



+025 

 



+0-5 

 0-5 

 0-5 



+012 



200 



19-9 



Xa 



-10 

 -1-2 















-11 



600 



611 





0-25 



20-5 



20-25 





-0-6 



60-2 



608 





0-5 



205 



20-0 









60-75 



60-75 





0-5 



20-25 



19-75 









60-75 



60-75 







200 

 24 



Mean 

 Corres 





60-6 

 239-0 



Corres 



jonding to ... 



)onding to ... 



X : Xa = 35-8 : 240= 100 -. 6703 



X:Xa=334: 239 = 100 -.71-55 



Atmospheric air under 1 atm. pressure. 



XI 



+0-7 



+ 1-0 



+0-5 



05 



+0-85 

 0-75 



180 

 177 



1715 

 170 



XI. 





 +0-5 

 0-5 

 05 

 0-5 



+0-25 

 0-5 



620 

 62-5 



61-75 

 620 





0-50 



17*7 



172 





0-5 



62-2 



61-7 





0-5 



0-5 



17-5 



170 





0-5 



62-2 



617 



Mean 17*1 







61-8 





Corres 



aonding 



to ... 



19-3 





Corres 



jonding to ... 



265-0 



