NO. 6.] 



DETERMINATION OF AZIMUTH. 



63 



') W 13li 5m Hw- W = - Om 79.7; March 21 W 13h 4" Hw- W = + O^ 5".5. 2 ) Star ass. 

 to be S Persei. The corrections applied to the altitudes of the same star in List A (p. 7) are 

 erroneous; the altitudes have been computed on the supposition that the star was S Persei and 

 with a correction of + 10' to the circle-readings Oc. N. 8 ) W 13 h 19" Hw W = + 4m 19".5. 

 4 ) Taken nearly 5 hours before the first obs. of the Sun and 8 hours before the last obs. 

 of m. 



