June 25, 1886.] 



SCIENCE. 



565 



V 





5 





ri 



70 



u 











50 







_ 







50 









40 









30 





20 





10 











320 





110 





100 





90 





SO 



1 



70 



3 





as 



60 









50 



Q 







40 





30 





20 





10 





n 



55 



I 



Weekly mean 



Thernrometer DO. 7 



61./ 



WeeKly meau 

 _Birom e ter J%<?/9 



-2% 6 89 



