OF ARTS AND SCIENCES. 



401 



Aa 



TABLE I. 



These residuals may be considered as representing the true devia- 

 tion from the normal places, either at l*", 3^ 5^, etc., or at — 5°, +-5°, 

 -|-15°, etc. 



If the right ascension is assumed as the argument, we shall have 

 from the curves represented by z/a the following : — 



TABLE II. 



The values in the horizontal columns, having been derived from 

 different curves, no longer sustain the relation which existed in the 

 corresponding values of Table I. They may be connected symmetri- 

 cally by drawing a series of smooth curves with the declination for 

 the argument, as shown in Table III. 

 VOL. XVIII. {n. s. X.) 26 



