and the Maximum of Magnetism of Iron, Steel, and Nickel. lo3 



Table V. 

 Norway Iron, Magnetic. 



M. 



Q- 



A. 



ft. 



T. 



at 



Q. 



X. 



^ 



T. 



1344 



865 



6439 



512 



2-290 



10590046240 



3680 



35240 



•2673 



2550 



9910 



759 



1892 



4-393 13410030520 



2429 



54970 



•5161 13000 



25200 2005 



5857 ! 



5-910 142400 24090 



1917 



62810 



•5572 15310 



27480 2187 



8110 : 



7-874 449100 18940 



1507 



68490 



•6725 30140 



44820 3567 



8921 



13-77 15680011390 



906 



770GO 



•9305 53800 



57820! 4602 



13970 26-81 165S0O 6038 



480 



84710 



1-362 77700 



57110; 4545 



21630 (36-86 ! 168500 4572 



364 



87860 



1788 93000 



52020 4140 



28200 || 



|l 1 ! 







Table VI. 

 Cast Nickel, Normal. 



M. 



Q. 



X. 



fi. 



T. | 



M. 



Q. 



X. 



p. 



T. 



1-433 



852 



595 



47'A 





13-43 



27100 



2018 



160-6 



11260 



2-904 



2377 



819 



651 





16-53 



31050 



1878 



149-5 



13530 



3-527 



3685 



1070 



85-1 



1 



2102 



34950 



1663 



132-3 



16480 



5-555 



10080 



1815 



144-4 





3217 



41980 



1305 



103-8 



22300 



6783 



13680 



2017 



160-5 



5120 



33-92 



42650 



1257 



1000 



23360 



7401 



15270 



2063 



164-2 



5614 



60-91 



50860 



855 



66-4 



29540 



9-273 



19600 



2114 



168-2 | 7644 



82-36 



53650 



651 



51-8 



33460 



11-78 



24720 



2098 



167-0 | 9902 



105-2 



55230 



525 



41-8 



35120 



Table VII. 

 Stubb's Steel Wire, Normal. 



M. 

 1673 



Q. 



X. 



n. 



T. 



| M. 



Q- 



X. 



[X. 



T. 



159 



953 



75-9 





13-65 



54300 



3978 



316-6 



20900 



•6237 



67S 



1087 



86-5 



598 



19 35 



77770 



4020 



319-9 



29480 



1-084 



1197 



1104 



87-9 



1101 



I 27-43 



100800 



3676 



292-6 



38590 



2043 



2448 



1199 



95-4 



2257 



i 33-39 



111300 



3335 



265-4 



45110 



2-714 



3446 



1270 



1010 



3095 



35-58 



115000 



3228 



2569 



45950 



4-221 



6278 



1487 



118-4 



5145 



j 38-64 



119400 



3092 



2460 



48060 



10-26 



33700 



3286 



261-5 



16170 



1 











The best method of studying these Tables is to plot them : 

 one method of doing this is to take the value of the magnetizing- 

 force as the abscissa, and that of the permeability as the ordi- 

 nate ; this is the method used by Dr. Stoletow ; but, besides 

 making the complete curve infinitely long, it forms a very irre- 

 gular curve, and it is impossible to get the maximum of mag- 

 netism from it. Another method is to employ the same abscissas, 

 but to use the magnetism of the bar as ordinates ; this gives a 

 regular curve, but has the other two disadvantages of the first 

 method ; however, it is often employed, and gives a pretty good 



Phil. Mag. S. 4. Vol. 46. No. 304. Aug. 1873. M 



