490 STRAINS PRODUCED IN IRON, ETC. TUBES IN THE MAGNETIC FIELD. 



TABLE X. 



Steel Tubes. 



Field. 



3. 



5. 



7. 



VII,. 



VII 2 . 



Vllg. 



9. 









Boke Dilatations, (a + 2/x) 10°. 







DO 



+ 13 



+ -05 



- -19 



+ 05 -29 



- -10 



' - -45 



100 



+ -38 



+ -20 



- -30 



+ -25 



- -59 



- -02 



+ -08 



150 



+ -16 



+ -68 



+ -21 



+ -40 



- -4 



+ -07 



+ -56 



200 



+ 33 



+ 1-25 



+ -52 



+ 31 



- 19 



+ -10 



+ -70 



300 



+ -68 



+ 2-14 



+ -76 



- 06 



+ -04 



+ -11 



+ -86 



400 



+ -53 



+ 2-64 



+ -96 



- -46 



+ -16 



+ -08 



+ 93 



500 ! 



+ -39 



+ 2-89 



+ 1-05 



- -82 



+ -24 



+ '04 



+ -98 









Longitudinal Dilatations, a 10 6 . 







50 



1 + -25 



+ -15 



+ -51 





+ -68 



+ -95 



100 

 150 



+ -68 

 + D40 



+ -85 

 + 1-75 



+ 1-23 



+ 1-47 



Probably 



Probably 



+ 2-20 

 + 2-00 



+ 1-80 

 + 1-50 



200 



+ 1-51 



+ 1-80 



+ -98 



same 

 as for 

 VII 3 . 



same 

 as for 

 VII,. 



+ 1-40 



+ -75 



300 



+ -40 



+ -60 



- -45 



- 31 



- -90 



400 



-1-00 



- -90 



-1-98 



-2-00 



- 2-42 



500 



-2-40 



-2-40 



-3-30 







-3-52 



-3-8 









Tangential Dilatations, /* 10°. 







50 



- -06 



- -05 



- -30 



- -32 



- -49 



- -39 



- -70 



100 



- -15 



- -33 



- -77 



- -98 



-1-40 



-Ml 



- -86 



150 



- -62 



- -54 



- -63 



- -80 



-1-20 



- -97 



- -47 



200 



- -59 



- -28 



- -23 



- -55 



- -61 



- -65 



- -03 



300 



+ -14 



■H "77 



+ -61 



+ -13 



+ -18 



+ -21 



+ -88 



400 



+ -77 



+ 1-77 



+ 1-47 



+ -77 



+ 1-08 



+ 1-04 



+ 1-68 



500 



+ 1-40 



+ 2-65 



1 



+ 2-18 



+ 1-35 



+ P88 



+ 1-77 



+ 2-39 





