346 TRANSIT OF VENUS, 1874. EGYPT. 



There does not appear to be any reason for assigning unequal weights to 

 the above. Their mean is 



o h . 5 m . 6"88. 



The corrections to be applied to this result for the relative personal 

 equations of Captain Browne and Mr. Hunter in sending and receiving 

 signals, and in observing transits of stars, are identical, but with sign 

 changed, with those already described in the section Longitude of Alexandria, 

 (page 329), and, therefore, amount together to + O s '03. The Diurnal Aber- 

 ration of the Right Ascensions of the clock stars, having been omitted by 

 Mr. Hunter, causes the observed difference of longitude to be too small by 

 O s> 02, no clock stars being very far from the equator. The total correction 

 is therefore + C^'OS. Hence 



h m 3 



CONCLUDED LONGITUDE of SUEZ, EAST of Mo- 1 



KATTAM ................... . ............ } " 5 " 6 '9 3 



CONCLUDED LONGITUDE of MOKATTAM, EAST of 1 , .. 



GREENWICH ............................. 2< 5 " 6 ' 2 + 



CONCLUDED LONGITUDE of HUNTER'S STATION at i 

 SUEZ, EAST of GREENWICH ................ ) 



G. L. T. 



