On Mean Sea Level and its Flucl nation fi. 



i; 



111 Table IX., at tlie end of this paper, will be found the details 

 of Dr. Brehmer's impoitant obseivations on Mean Sea Level at German 

 and Danish Stations. 



In the foUowiii" Ta))lc 1 have worked out co.sine formulfB, similar 



P3 



fM 



n 





to those set forth on page 9, for the above data, for certain of the 

 separate Swedish Stations recorded by Dr. P. C. Rosen, and for the 

 German and Danish ports recorded by Dr. Brehmer ; and I have 



