Roy. Sot Proc, vol 73, Plait 



latitu des of 

 centres of 



O-i 





ACTION 



10- 





OF 



SUNSPOTS 



20- 



A 



S. HEM £ 



30 J 





MEAN 



0- 





HELIOGRAPHIC 



10- 



B 



LATITUDE OF 



5 U N o PL) 1 o 



20 ^ 





S HEM 1 ?. 



0- 





LATITUDES OF 



2.0- 





CENTRES OF 



40- 





ACTION 



OF 



c 



PROMINENCES 60 " 





5 HEM E . 



80- 

 1200- 





SUNSPOTS 



MEAN DAILY 



800- 





AREA 

 5. HEM'' 



-400- 

 0- 



D 



i i i i i i > i i l 







" " 1 "i" " 



* / \ A 

















\ 1 , 

 \ >' 



/ 





/ i 





h' 1 1 ! 1 1 1 1 1 



Vt-tt p l I l 1 « i 1 



1 1 1 1 1 1 1 1 1 



p-r-r r | i 1 1 i i j 



1860 



os to those on Plato 



18700 



1880-0 



18900 



case the southern hemisphere of the Sun is referred to. Vertical Hi 



1900-0 



l'luto 1. 



