under the Operation of Feeble Magnetic Forces. 

 Table I.— Jan. 4, 1887. 



237 



Eesistance. 



Current. 



Corrected 



Eeadings. 



00 







+ 099 

 



- 099 





 + 197 

 



- 197 







+ 326 

 



- 326 







+ 483 

 



- 483 







+ 934 

 



- 934 







+ 1149 

 



-1149 

 



+ 565 



+ 1298 

 + 565 

 



- 565 

 -1298 



- 565 







+ 599 



+1493 



+ 599 



' 



- 599 

 -1493 



- 599 







240 



241 



241 



240 



240 



242 



2413 



2381 



239 



245~ 



235" 

 237 



2501 

 246 

 228 

 2321 



2411 

 241 



238} 

 239 



245 

 243 

 235 

 237 



250} 

 246 

 228 

 2321 



284 

 265 

 1951 

 213} 



232} 

 353| 

 338f 

 3011 



1007E 



1007L 



00 



507E 



00 



507 L 



00 



307 E 





307 L 



GO 



207 E 



00 



207 L 



CO 



107 E 



283} 

 2641 

 195} 

 214 



283f 

 264^ 

 195} 

 214 





107 L 



CO 



87E 



3061 

 276f 

 172} 



2011 



3071 

 276f 



171} 

 201 



307 

 277 

 171} 

 201 



00 



87L 



00 



177E 



325| 



286'i 

 1511 

 1901 



352| 

 299* 

 12li 

 1741 



2381 



325|- 



3151 



286 



2371 



150f 



160 



1881- 



353" 



2991 

 121} 

 1741 



2321 



3531 



3371 



300 



2411 



121^ 



136 



1731 



77 E 



177 E 



00 



177L 



77 L 



177 L 



GO 



167 E 



67 E 



167 E 



00 



167 L 



67 L 



167 L 



00 





to 2007 ohms, which is one quarter of the first step in the 

 table (from 1007R to 1007L), is 



y = _ -13 + -06 = - -07 division. 

 This is the step for which the coil was adjusted ; and the dif- 

 ference between the calculated and observed (zero) value of y 



