1062 Mr. E. J. Harfcung on the Construction and 



somewhat from one another in length, the relative positions 

 of air-bulb and weights in the suspended system were not the 

 same in the two cases. 



Weight. 



1.... 

 2..., 

 3 



Table II. 





Value with 

 fibre 1. 



Value with 

 fibre 2. 



Percentage 

 increase. 



0-2590 mg. 



0-2596 nig. 



0-23 



0-5910 „ 



0-5923 „ 



0-22 



1-0370 ,. 



1-0395 „ 



0-24 



Fig-. 2. 



The difference between the two sets of values is consider- 

 able, and neither would agree with the true values obtained 

 when bulb and weights are hung at the same level. This 

 last procedure is therefore to be recommended, although it is 

 not really necessary unless absolute weighings are required. 



