1865.1 



165 



[Chase. 



Tabulating similarly the magnetic observations for one or two 

 days prior and subsetiuent to the several thermonietric and barome- 

 tric fluctuations, I find indications of a continued action, which i.s 

 paralleled by the ocean swell that remains after the subsidence of the 

 winds by which the waves were originally excited. 



In order to ascertain whether the correspondence, which is thus 

 shown to exist between the daily tneans of the different elements, 

 can also be traced in the hourly means, I noted the character of the 

 undulations for several entire weeks, selecting observations at differ- 

 ent seasons, in such a manner as I thought would give a pretty 

 correct approximation to the average of each of three years. Con- 

 sidering the increasing waves as positive and the decreasing as nega- 

 tive, I obtained the data which are summarily detailed in Table III. 



TABLE III. 



Correlations of Temperature, Gravity, and Magnetism, in the Hourly 

 Means at Toronto and St. Helena. 



This triple comparison exhibits, in a very conclusive and satisfac- 

 tory manner, a connection between temperature, gravity, and mag- 

 netic force, which, taken in conjunction with my previously adduced 

 evidences of rotation-tides, appears sufficient to adequately explain 

 all of the well-established normal meteorological fluctuations, and to 

 give a clearer insight into the true meaning and value of the various 

 partial relations which have been previously ascertained or surmised. 



