MERIDIONAL OBSERVATIONS AT SUEZ. 



337 



The system of wires remained intact during the observations. 



The transits of stars were reduced by Mr. Hunter on the spot. The 

 Collimation and Azimuth Errors were adopted for each night as found from 

 the observations of Polaris. The Level Error was not corrected for inequality 

 of the size of the pivots, as this correction was afterwards determined in 

 England. 



The Clock Error, however, as found by Mr. Hunter, requires no further 

 correction on account of instrumental errors, since stars were observed with 

 the transit axis in both positions, and the adopted clock error is the mean of 

 the two positions of the instrument, irrespective of the number of stars 

 observed in each position. 



The Diurnal Aberration of the Clock Stars is taken into account as a final 

 correction to the Longitude. 



MERIDIONAL TRANSITS observed at SUEZ with the SIDEREAL CHRONOMETER 



LOSEBY 102. 



1874, December 3. 



