i6 Captain Kater's account of the 



No. 1 . was reduced in weight, and being then too light, 

 ,005 of a grain was enclosed in it and the following compa- 

 risons made : 



Added ,005 of a grain to No. 3. 



The wires which were found necessary to make each of 

 the copies equal to the Standard troy pound being enclosed, 

 the button was screwed in with a force sufficient to resist 

 any ordinary attempt to detach it ; but should such an en- 

 deavour ever be made with success and the wires be lost, 

 the following table contains an account of their number and 

 value. 



