292 Mr. W. H. Preece. [Dec. 22, 



German Silver. 



inches. 



Actual 

 fusing 

 current in 

 amperes. 



Fusing 

 current 

 calculated. 

 ad 312 . 



Constant 

 " a." 



0-004 



1-825 



1 -317 



7230-7 



-005 



2* 143 



1 "840 



6061 ' 3 



o-oio 



5 "554 



5-204 



5554 



0-012 



6-824 



6-840 



5191 2 



-014 



9 125 



8 "620 



5490 -4 



0-018 



12-78 



12-57 



5292 -2 



-020 



14 40 



14-72 



5091-2 



0-026 



20-16 



21-82 



4808-8 



0-030 



27'14 



27-04 



5223-1 



0-033 



30-90 



31-20 



5150 



0-037 



36 15 



37-03 



5079 



0-040 



43 -26 



41-63 



5407 







Mean = 



5^03 7 



Platinoid. 



Diameter 

 in 

 inches. 



Actual 

 fusing 

 current in 

 amperes. 



Fusing 

 current 

 ?aleulated. 



Constant 







007 



3 



•675 



2 



•846 



6275 







•010 



5 



285 



4 



860 



5285 







•012 



6 



532 



6 



•389 



^ 969 -1 







014 



8 



•0:^6 



8 



•050 



4843-1 







018 



11 



•670 



11 



•74 



4832 -6 







•020 



14 



•21 



13 



•75 



5024 







016 



2L 



•38 



22 



•77 



4563-2 







028 



28 



•436 



29 



13 



4744 







035 



28 



•82 



31 



82 



4401 -3 







040 



40 



•67 



38 



•88 



5084 



Mean = 



4860-7 



