112 Dr. W. F. G. Swarm on the Conduction of Heat 



Great regularity cannot be expected, because the results 

 depend to some extent on the closeness of* fit of the cork, &c. 

 The values of §i/& are considerably less than unity, as 

 anticipated. Of course, if the temperature gradients had 

 been measured farther along the pipe, i. <?., nearer to the 

 calorimeter, we should have found values of §i/8 2 greater 

 than unity, for this ratio can only be diminished near the 

 heater at the expense of being increased elsewhere. 



By summing up the various differences in temperature, we 

 can draw two curves illustrating the variations of temperature 

 along the pipe for the two cases. These curves are shown in 

 the figure, the temperatures being on the thermocouple 



Curve. A corresponds to Ike case Krhere gas flowed.. 

 Curve B Corresponds' tb the. Case Ur/terc no <$q.s flowed 



Z ^3^ if S 6 



.Distance alona pipe m cms 



scale. The temperature corresponding to the calorimeter is 



at some unknown distance below the origin. If x represents 



d 2 d 

 a distance measured along the pipe — 2 is proportional to the 



nx 



