Lockijcr and Lockye 



PROMINENCES 

 ON SUN . 



(TACCHINI.) 



PRESSURE . 



[APR -SEPT.] 

 LOW PR. MTHS. 



BOMBAY . 



(INDIA.) 



700 

 600 

 500 



200 

 100 

 2 9-7000 



80 



PRESSURE 



[APR.-SEPT] gQ. 

 LOW PR. MTHS. 



COLOMBO . 29-840. 



(CEYLON.) 



PRESSURE . 76, 00 



[jUNrOCT.] 

 HIGH PR. MTHS. 760-00 



BAT AVI A . 



(JAVA.) 759 00 



PRESSURE. 



30- 



[MAY-OCT.] 



20- 

 10- 



HIGH PR. MTHS. 



100- 



MAURITIUS. 



90- 





80- 





70- 



30 



060 J 





90 -, 



PRESSURE. 



70 ■ 



[APR-SEPT] 



50- 



HIGH PR. MTHS. 



30- 



PERTH . 



■110 - 



(GARDENS.) 



90- 



(W. AUST6) 



70- 



30 



050- 



PRESSURE . 



[APRrSEPT.] 

 HIGH PR. MTHS. 



ADELAIDE . 

 (AUSTRALIA.) 



PRESSURE . 30-05O-! 



[APR - SEPT.] 

 HIGH PR. MTHS. 



SYDNEY . 

 (AUSTRALIA.) 



29-950- 



•850 



1870- 



L^i 



1880-0 



I87O0 



1890-0 

 , i I , 



Proc. Roy. Son., vol. 71, PI, 1 

 L 



19000 



1900 



Note. — The vertical continuous and broken lines represent the epochs of maxima and minima of sunspot activity. 



