MAGNETIC SHIELDING IN HOLLOW IRON CYLINDERS. 



679 



Table XVI. — Shielding Ratios. — Transverse and Circular Fields. Shield B. (See Plate IV.) 





H, = 437. 





H, = 20-9 





H, = 33-6. 



H ( = 64-25. 



H, 



(H)„. 



9 



H, 



(H)« 



.'/ 



H, 



(H), 



.'/' 



H, 



1 

 (H),„ 



9 









•945 



4-6 







2-35 



8-9 







3-00 



1 11-2 







4-65 



13-8 





1 



•527 



8-3 



1 



1-60 



13T 



1-0 



2-2 



15-6 



1-22 



3-72 



17-3 





1-6 



•279 



15-7 



1-5 



1-25 



16-7 



1-7 



1-7 



19-8 



1 76 



3-44 



18-7 



m 



a 



2-3 



•186 



23 5 



1-8 



116 



18-0 



2-4 



1-57 



21-4 



2 - 24 



3-24 



19-8 



'M 



3-0 



•217 



; 20-i 



2-25 



1-05 



19-9 



3-1 



1-76 



19-1 



3-6 



3-40 



18-9 



a 



5 



•357 



12-5 



2-9 



1-07 



19-5 



3-6 



2-10 



16-0 



5-3 



5 00 



12-8 



o 



6-5 



•473 



9-25 



3-8 



1-295 



16-1 



5-0 



2-77 



123 



6-7 



6-40 



100 



o 



8-0 



•628 



69 



5-4 



1-99 



10-5 



6-2 



3-58 



9-4 









H 



10-3 



•922 



4-7 



7-8 

 10T 



3-01 

 4 



7-0 

 5-2 



7-5 

 8-3 

 9-5 







441 

 4-90 

 5-73 



7-6 

 6-8 

 5-8 















•945 



4-6 







2-35 



8-9 



2-97 



11-3 







4-65 



13-8 





1 



•364 



12 



1 



1-295 



16T 



1-0 



1-76 



19-1 



1-2 



3-24 



19-8 



ai 



1-6 



•225 



19-4 



1-5 



•935 



22 - 4 



1-67 



1-30 



25 8 



1-7 



2-85 



22-5 



O 



2-3 



•17 



25-8 



1-8 



•792 



26-4 



2-4 



1-09 



30-8 



2-2 



2-60 



24-7 



■4S 



3-0 



•186 



235 



2-25 



•730 



28-8 



3-0 



1-41 



23-8 



3-5 



2-59 



24-8 



t3 



3-6 



•256 



17-1 



299 



■825 



25-3 



3-5 



1-47 



22-8 



5-2 



403 



160 



o 



O 



5-0 



•356 



126 



3-8 



119 



17-5 



4-9 



240 



14-0 



6-5 



5-30 



12-1 



O 



6-4 



•480 



9T 



5-4 



1-91 



10-9 



6-0 



3-20 



105 









o 



8-0 



•635 



6-9 



7-S 



299 



7-0 



74 



4-0^ 



8-2 











9-0 



•720 



6-1 



101 



403 



5-2 



8-16 



4-62 



7-2 











10-2 

 



•890 



4-9 







2-39 





9-4 

 



5-515 



2-92 



6-0 



_ 



11 5 











•972 



45 



8-75 







4-68 



13-7 





•94 



•733 



6-0 



•97 



2-11 



9-9 



1 16 



2-58 



13 



1-15 



4-17 



15-4 





1-27 



•637 



6-9 



1-54 



1-84 



11-35 



1-82 



2 54 



13-25 



1-82 



4 53 



14-2 





1-82 



•486 



9 



2-29 



1-86 



11-25 



2-54 



294 



11-4 



2T1 



4-65 



13-8 



"S 



2-9 



•462 



9-5 



2-9 



2-15 



9-7 



3-22 



3-48 



9-7 



2-6 



5-15 



12-5 





3-8 



•55 



8-0 



3-8 



2-75 



7-6 



4-25 



4-40 



7 64 



3-5 



643 



10-0 



Eh 



5-4 



•765 



5'7 



5-4 



3-70 



5-65 



5-9 



6-05 



5-5 



5-8 



9-33 



6-9 



O 



7-7 



1075 



4-1 



7-8 



5-0 



4-2 



8-15 



7-82 



4 3 



7-9 



12-1 



53 





9-9 



1-32 

 •972 



33 



10-0 



607 



34 



10-2") 

 1-165 



9-33 



36 



10-8 



16-6 



3-9 









4-5 







2-39 



8-75 



3-71 



9 05 







4-68 



13-7 



ai 



•5 



1-02 



4-28 



■97 



2-9 



7-2 



1-82 



4-40 



764 



115 



5-3 



121 



R 

 O 



1-27 



1-13 



4-13 



1-5 



3-4 



6-1 



2-12 



4-77 



7-05 



1-82 



6-03 



10-6 



*j 



1-82 



1-16 



3-77 



23 



3-94 



5-3 



2-54 



5 13 



6-55 



2-11 



6-35 



10-1 



8 



2-9 



1-31 



3-34 



2-9 



4-40 



4-8 



3-22 



6-07 



5 5 



2-6 



7-06 



9-1 



a 



3-8 



1-48 



2-95 



3-8 



5-04 



41 



4-25 



6-80 



50 



3-5 



8-1 



8-0 



r- 



54 



1-72 



2-54 



5-5 



5-91 



3-5 



5-9 



8-10 



4-2 



5-8 



10-8 



6-0 



o 



7-7 



1-95 



2-24 



7-8 



6-95 



30 



8-15 



9-49 



356 



7-9 



13-26 



4-9 





9-9 



2-09 



2-1 



10 



7-85 



2-7 



10-25 



10-95 



3 07 



10-8 



16-25 1 



l 



4-0 



TRANS. ROY. SOC. EDIN., VOL. XL. PART III. (NO. 26). 



5 G 



