398 Messrs. Cross and Williams on the Strength of the 



Table IV. 



Core, Norway Iron. — Diaphragm, two superposed Disks of 

 Ferrotype Iron, No. 31. 



Strength of 



Induced 



Strength of 



Induced 



field. 



current. 



field. 

 •184 



current. 



•016 



50 



49-3 



•054 



19-3 



•205 



50-2 



•070 



25-7 



•229 



480 



•081 



28-5 



•266 



40-3 



•089 



30-2 



•306 



31-8 



•103 



35-0 



•342 



27^7 



■119 



38-5 



•433 



16-7 



•133 



40-7 



•530 



11-9 



•144 



42^7 



•667 



8-3 



•155 



45-7 



•830 



70 



•169 



47^0 



1018 



5^0 



Table V. 



Core, Norway Iron. — Diaphragm, three superposed Disks 

 of Ferrotype Iron, No. 31. 



Strength of 



Induced 



Strength of 



Induced 



field. 



ciu-rent. 



field. 



current. 



•000 



0-5 i 



•346 



69^7 



■018 



3^2 



•366 



60^7 



•047 



8-0 



■390 



61-3 



•079 



14-2 



■416 



63^0 



•084 



14-7 



•445 



62 3 



•096 



170 



•479 



61^0 



•110 



19-7 ' 



•514 



58-5 



•118 



21-8 \ 



•550 



55^7 



•135 



25-5 ; 



•591 



52^4 



•151 



28^3 



■6.37 



48^7 



•175 



330 



•6.59 



47 3 



•213 



39^0 



•765 



417 



•249 



46-3 



•854 



36^7 



•277 



49^8 



•983 



300 



■313 



553 



1180 



22^8 



•329 



58-7 







