488 

 Hence 



Mr. G. W. Walker on the 



ICiSq 



Ir = -039. 



In the following table my measurements are first corrected 

 for the compress! bi-lity term, which is 



{ 



1 + 



'00069 



(1 + -00360 76 



1 









0, ' * s 













S 



.^ - -^ 













§ 



^"^1^3 











»o 



H 









, 



w 



i X 









•*o 



^ 









• 











Temp. 



Eatio. 



1 



4- 



4 



•1 





+ 







i! 



1—1 









^^ 





- ^ 











" — ^ 



f^ 1 





" — ^ 



o 











10-6 



6-290 



6-280 



6-525 



6-525 



11 



6-285 



6-275 



6-525 



6-525 



23-9 



6-025 



6-015 



6-540 



6-540 



24-3 



6-000 



5-999 



6-530 



6-525 



52 



5-510 



5-505 



6-550 



6-645 



53 



5-495 



5-490 



6-550 



6-645 



76-5 



5-120 



5115 



6-545 



6-635 



100-9 



4-790 



4-785 



6-545 



6-635 









Mean.... 



6-635 



The agreement of tne numbers in the last column is as 

 close as the experiments warrant, and shows that the tempe- 

 rature effect is accounted for. 



We obtain 



z^=l + 



•000297 P 



1 + 



•00069 P 



(1 + -00365076 I """^ (1 + -0036076| r"^'^^^6> 



Hence 

 K = l + 



•000594 P { _ -00069 P 



(1 + -00365076| "^ (1 



+ -0036076}{^+-«341- 



