1864.] 



Magnetograph-traces at Kew and Lisbon. 



119 



This Table has been constructed with the following values of K, the 

 coefficient for one inch. 

 Kew. Lisbon. 



English unit, English unit. 



rK(i7andi8) ... =o-o66 

 •" \ For the other days K=o-04i 



Declination K= 0-024 ••• K=: 0-040 



Vertical force K=o-o24 K = o-o26 



Horizontal force ... K=o o4] 



0> O^O ON 'i- >0 OS Ox ^ On "~iOO VO 00 vo 00 vo t^vo '^OO 00 



m rri c5 CO O >0 to ro\0 mvo t~^(~lC^c^t-^c^O'-'c^Ot^t~^ 



000 OwOOOOOOOOOOOOwMOi-iOO 



000 OOOOOOOOOOOOOOOOODOO 



000 O O O O O O o o o p o p p p p p p p p 



b b b b b b b b b b b b b b b b b b b b b b b 



<j-)u-iO u-iO^^'J-^^'^'^^OOOOOOO'J^OOOO 



000 o p p p o p pppppppppppppp 



b b b b b b b b b b b b b b b b b b b b b b b 



+ + + I I I I I ! I I I I i ++ I I I I I 



60 C 



■<J- rl- O 00 00 



■ o ^ 



o o ' 

 o o 



b b 



00 00 

 o o 

 o o 

 o o 

 b b 



>-. >-. o o 



o o 

 o o 

 b b 



o o 

 o o 

 b b 



ooooo^'<^OOOocioo 00 



tJ-vo tOOO ^ O 



0000000000 tl-l 



0000000000 .0 



000000000 p p 



b b b b b b b b b b b 



p p P P P ^, p p 9 P 

 b b b b b ' b b b b 



I I I I + + + + +' 



i — I O ^ O u-iu-iv/-iu-iioO O rs*^ 



flOOOOOOpOOO go 



S b b b b b b b b b b b 



+ + I I + I I ++ g + 



OS 



00 00 CO 00 

 On OnM2 vO 



1-1 l-l Cl CO 1-1 



00000 

 00000 



b b b b b 



ITS IJ-l ^ >-< 

 O cl "O 00 vo 

 N c4 1-1 O 



00000 

 p p p p p 

 b b b b b 



o o 

 o o 

 b b 



w O 



o o 



o o 



b b 



OOOi'^O^O'-oO'^'^^O 10 



COCO'^U-ICO"^"^'^'^'"''^'-' " 



I opoop Sooooooo^, O 



I b b b b b ^ b b b b b b b * b 



0«^0>^0>J^OO'J~> 



CO CO c< d d cooo cl 



p p p p p p p p p 



b b b b b b b b b 



I + I I ++ + + + 



60 C3 



n 



C^t^O OSt}-COO r^lOt-^COCOTl-'<^Tj-COt-^>J1U-|VO.^-^COO\CO 



vr>0'-'"oooc<i-ioo'00 -^vo >ooo ■^o o o o^ooo -"i-^ u 

 rlcO'^coi-iMT4-coc^Ni-<i-'>-ii-'»-<i-'coclclc<i-ii-ii-icoM 



0000000000000000000000000 

 p p p p p p O p O O O o p p p O p p p p O p p p p 



bbbbbbbbbbbbbbbbbbbbbbbbb 



vrsw-io O «J^O O <J^O >j-|iy-|ij-)C O u-iuo<J-iO O O O u-iu-iQ O 

 >0 t^O Os-^coo v^vo rl cO'^-tl-^rot^Vi-i'j-iiO'^-^coONco 

 ppMppOHHO 00000000000000000 



b b b b b b b b b b b b b b b b b b b b b b b b b 



I I I I 



■+ I I + I I + + 



60 s 



o o 



000 



VO 00 V£) 



: o o o 

 000 

 000 



M O l-> 1-1 O HI 



O Q 

 000 



b b b 



1 I I 



Mcod wcJi-iclcoi-icowcoi-i 

 p p O ^_ p O p O O p O O O O 



b b b ■ b b b b b b b b b b b b b b b b b 



u-i >-o u-, O 10 O 

 CO CO >-< CO 61 M >-< 



0000000 



^,4.+ + + + +++ + 



+ I I ++ + + + 



VD \0 O 

 ON OS d 

 O O w 

 000 

 000 



b b b 



00 00 o ^ -^vo 00 V.O o o o -=4-00 00 



VOO cJOOOOOOiOU-i'vhMVDNOO'^OVDvO 



Mw :iHOOOi-iMONOwOc<c^i-i- 



00 .000000000000000 



00 000000000000000 



b b b b b b b b b b b b b b b b b 



^ c^ 



rt" CO 



000 O ^ 0'^>^'J~ii^>J-)00^0io0'^000'^0 

 tJ- u-i _ .vococo covo VO d Oscl "-ocoOOO t^VD w-i 



p p p : p p ; p p p p p p p p p p p ^ p p poop 



b b b ' b b ' b b b b b b b b b b b b b b b b b b 



1 I I 



-f+ + + ++++! 1-4-1 I + ++++ 



