﻿33 



exist, one finds that on the ;tver.\i,'o the K periods exceeded the D in pendulums 37 and 38 by 17 x 10~^ 

 and 15 x 10"' second respectively, whereas in No. 39 the D period exceeded the R by 9 x 10"". 

 Individual ditferences, however, fiuetuate largely, and corresponding results, based on a greater number 

 of observations at Kew, make the difference much less for No. 37, and both numerically less and of 

 opposite sign for No. 38. It has thus been decided to neglect any difference that may possibly have 

 existed between the D and R positions in dealing with the observations at Melbourne, and those on 

 February 6 at Winter Quarters. 



Tables II., III., and IV. summari.se the results of Table I. 



T.VBLE II. — Results at Winter Quarters. 



Tabi.e III. — Results at Winter Quarters. 



July 31, August 1, 1902 



Febru-ary 1, 2, 1903 



fi „ 



September 5, 6 ,, 



Means, allowing half weight to observations on February 6, 1903 

 „ from July 31, August 1, 1902, and September 5, 6, 1903 

 „ „ February 1, 2, 6, 1903 



Periods of pendulums. 



37. 



•5083157 

 248 

 268 

 139 



•5083090 

 192 

 176 

 071 



■5083331 

 382 

 344 

 301 



•5083194 

 ■5083148 

 •5U83255 



•50S3126 

 •5083080 

 •5083187 



■5083339 

 ■5083316 

 •5083369 



