148 



REPORT — 1898. 



Nalder, 4274. ^ 

 R.'J'.G.'s mercury cupsnsed 



J.V.J.'s 

 R.T.'g.'s 

 J.v!j.'s 



Jlean 



Nalder, 4275. 

 E.T.G.'s mercury cups used 



J.V.J.'s 

 R.T.G.'s 

 J.v'.J.'s 



■100044 



142 



IL 



390. 



143 



Mean -100054 



The values found in 1894 were respectively 



•100050 and -100053 



in each case at 15-2°, and the differences are probably within the errors of 

 observation. If all the individual observations for both 1894 and 1897 be: 



FiG.l. No. 4274. 



Fig. 2. No. 4275. 



Results of observations on the -1 ohm coils used by Professors Ayi-ton and J. V. 

 Jones. 



Observations in 1894, thus • 

 Observations in 1897, thus + 

 The horizontal divisions are 0°1 C. 

 The vertical divisions are •000005 ohm. 



plotted, they -will be found to overlap each other, and it is difficult to 

 assert that there has been any change. If any exists it is certainly very 

 small. 



