.' * 



Feb, 7. 



'* 



Feb. 6. 



,;V*« .. 



J 



Feb,5. 



- » 



Feb,?. 



'M 





** •****#£ 



" „.-'* 





4 " .-" si ' •* 



Feb. 12. 



Feb, IS. 



FebJO. 



Feb.14. 



Feb, 9. 



% "*•*%* 



Feb./ 3. 



Mar, 8. 





Mar, 3. 



MarJ4. 



Mar,/3. 



Mar,/2. 



Life-history of the large sun-spot group, February 4 to March 14, 1917. 



Stonyhurst College Observatory. 



2S4I 



