M.-P. VOL. I.] CRAWFORD CONSTANT OF REFRACTION. l8l 

 STAR No. 377 /. c. (With 1156.) 



A I O.OQ334 



= 57 ; log [pvv] = 6.0815 



STAR No. 1156. 



p. e. = 



0.00018 



= 57 ; log [pw} = 6.0105 



I 0.00304 

 p. e. = it 0.00016 



