450 New Tables for ^Tiding the Deviation of a Star, ^c. 



more labour than in the above application. The method 

 is by adding three signs to the star's right ascension, if its 

 declination is north ; and on the contrary, subtract three 

 signs if the declination be south : then proceed as directed 

 above, and nialtiply the equation so found by the natural 

 tangent of the star's declination, and the product converted 

 into time will give the deviation required. 



LXX. A Nar. 



