HO INQUIRY INTO THE LAWS OF CONDUCTION OF HEAT IN BARS. 



units. I have little doubt that the results would come out within one or two 

 hundredths of those obtained by elaborate calculations. 



131. I have only to add, that the greater part of the computations in this 

 paper were executed by Mr Alexander Pirie of St Andrews. Every part of 

 the projections and graphical interpolations was performed by my own hand ; 

 and my thanks are especially due to the Messrs Johnston for the unusual care 

 with which they have been reduced in scale, and transferred to copper, as seen 

 in the Plates. 



St Andrews, April 1865. 



