OP ARTS AND SCIENCES. 



33 



TABLE v. — West Equatorial. 



Collecting the results for each instrument, but rejecting tlie last 

 series with the East Equatorial, we have : 



TABLE VL 



Combining the results of the observations over the inclined lines, 

 and assigning the same weight for each value of i, we have : 



TABLE VII. 



It will be seen, by an examination of Tables IV. and V. that the 

 magnitude of D apparently depends to a certain extent upon the 

 VOL. xviii. (n. s. X.) 3 



