PLATE II. SOLAR SPOTS, M 
ae 4759 EX sv 4800 
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ig sue { | a 
10 fw | / NUMBER Hb [ ‘ea \ p 7 | 
* AW oH aM Oe iE 1 oe iad Ba? AGUAS SU TLV 
60 Hf ¥ ali on ct Ee GOOG Po 
_ t Sh Es MG ye oe Aeneas 
| 0s 1 Bie Se ae Ss ye Oe Sn ae a ea Ys 
m PoN eh Pe oe ee ok 
= | Tee le OP sd NO OR RL WIR Wot eS TS oS eR I 
; BES hi ec SS, is TS TS ca WO sk La ES YY EA ER 
Ey | pie Bec aans a CE 
e | MEAN | | DAILY one | | OF THE | \ | MAGNETIC | DECLINATION a oa 
i ay bt [ite 
oA UON | Pa i 
YV \ NE. J \ \ / : 
“aie GAN. et oe A. ] Cc wi Pig L Ave 
“BSR aes Gans See, NK \ : 
“(oy anal st A a ONS 9 Oe 
so|-f1-\ RELATIVE EXTENT OF BLACK SPOTS ON THE SURFACE ht ae pe TE. ‘| SUN 80 
rN , : \ ig 
5 at BD OS | es Sa 0 a a Cl oie 
igs Be Se TA ee es I a | 
* Meter Woe ere es a a 
| LM ee NN ee a ee Lay ee a Tu 
SCARE EC NECEEEREE DEEN EEE AA EECAEEEA EEE ete 
df ira hie ot er 88 a aa BS Me 
7 a780 1790 16800 1819 1B 20 1830 1840 1850 1860 18°70 
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