300 



Mr. J. Buchanan on Hot Gases 



Equation to curve a is 



y = 697 x 10-' 037 ' ; 

 t being in minutes. 



(h) 



— quadrant insulated. 8 Leclanches = 715 divisions. 





Deflection. 





Deflection. 



Time. 





Time. 















Observed. 



Calculated. 





Observed. 



Calculated. 



m s 







m s 











693 



693 



3 



506 



506 



20 



669 





20 



489 





40 



647 





40 



472 





1 



625 



624 



4 



457 



456 



20 



604 





20 



441 





40 



583 





40 



427 





2 



563 



562 



5 



412 



411 



20 



543 





20 



397 





40 



523 





40 



384 











6 



370 



370 









20 



357 





Equation to curve ft is 



y = 693xl0-' 0454 '. 

 t being in minutes. 



— quadrant insulated. 6 Leclanches = 540 divisions. 





Deflection. 





Deflection. 



Time. 





Time. 





Observed. 



Calculated. 



Observed. 



Calculated. 



m s 







m s 











522 



522 



5 



:299 



299 



20 



504-5 





20 



287 





40 



487 





40 



275-5 





1 



470-5 



470 



6 



265 



265 



20 



455 





20 



254-5 





40 



437-5 





40 



244 





2 



421 



421 



7 



234 



234 



20 



406 





20 



225 





40 



391-5 





40 



215-5 





3 



378 



377 



8 



207 



207 



20 



364 





20 



198-5 





40 



349-5 





40 



191 





4 



336 



336 



9 



183 



182 



20 



324 











40 



311 









Equation to curve 7 is 



y = 522 x 10 

 t being in minutes. 



-•0454*- -00061*2 



