ON THE RADIATION OF CALORIC. 



185 



Fig. 4. 



In cequilihrio. 



O 



T 



When heated. 



£ 



-j reflects V radiates, >- A reflects V radiates y sum 5- excess above the equilibrium I 



When cooled. 



fP - f) - i) - I) - - - - J) 



•< reflects V radiates > sum v defect from the equilibrium V 

 K." - iJ - ? / " fJ .... IJ 



Fig. 5. 



O 

 p 



o 



B 



In (equilibrio. 



< reflects I radiates ^ I 



A acts as ] 



When A acts as 2. 



rP - 5"i . !■> i3\ 



■j reflects * I radiates ' L sum ' l defect "from 2 i * 1 



When A acts as i. 



] reflects ' j- radiates H sum H excess above h V\ 



VOL. IX. P. I. 



Aa 



XII. 



