DEGLI SPETTROSCOPISTI ITALIANI 39 



Ali the angles were counted from the north point of the solar disc towards the 

 west. 



II. 



The elements regarding the particnlar points of the Eclipse having thus been 

 determi ned it remaiued to determine the locai time, and that was the more ne- 

 cessary in order that the photographic plates might be prepared at the proper 

 time. The only instrumeut the mission had at Camorta was an altazimuth theodo- 

 lite bronght by Captain Waterhonse from Calcntta, a stnall instrument but of ex- 

 cellent constrnction. Not being able to remain on shore durinig the night I was 

 obliged to make use of the san alone. The following are the results of the ob- 

 servations I was able to make before the Eclipse, each observation comprising at 

 lest 10 appulses of the limb of the sun corresponding to the following means. 



Camorta 2 nd aprii 1875 



Chrouometer Wilfin Height of the Suu 



9" 8 m 2 S 58 dir. 58° 7' 45" 



9 23 36.70 inv. 53 59 35 



M. 9 15 49.64 M. 52 3 40 



Parallax = 5" 5 

 Refi-action =42 4 



Mean time of the observation 9 h 32 m 8 S 98 



Chrouometer time 9 15 49.64 



Correctiou for Wiffin . . . . -+- 16 19.34 



5 th aprii 1875 



Chronometer Wiffin Height of the Sun 



7 h 21 m 55 s 92 dir. 24° 9' 15" 



7 38 14.58 nv. 28 9 55 



M. 7 30 5.25 M. 26 9 35 



Parallax = 8" 

 Refraction =117 1 



Mean time of the observatiou 7 h 46 m 7 S 66 



Time by chronometer 7 30 6.25 



Correction for Wiffin . . . . -+• 16 2.41 



