MAGNETIC OBSERVATIONS. 



Ex. ther. 67° 

 Refraction = — 69". £ 

 Parallax = -\- 6.7 



At. ther. 65° 



Bar. 



Sun's declination 

 Latitude 



30.17 inches. 

 6° 53' 2 8".6 



■33 



Mean of observed double altitudes 



Local apparent time . 



Equation of time 



Local mean time 



Mean of chronometer times 



Chronometer slow of local mean time 



Longitude west 



Chronometer slow of Greenwich mean time 



• + 



1 47 



45' o".o 

 46 m 1 9 s . 6 



2 8.9 



48 28.5 



39 5- 2 



9 23.3 



46 45.7 



56 9.0 



Double Altitudes of the Sun for Time, observed in Valparaiso, Chile, April 7th, 1866. 



9 43 ra i5"-5 



44 6.5 



45 0.5 



46 57 



47 49-5 



48 44-5 



79° 3°' o") 



45 o } 2Q 

 80 o 



79 3° 

 45 



80 o 



0} 



2O 



Index correction 

 = -f 17' o".o 



Ex. ther. 67° 

 Refraction = — 6 7". 3 

 Parallax = -f 6.6 



At. ther. 



65° Bar. 



Sun's declination — 

 Latitude 



Mean of observed double altitudes 

 Local apparent time . 

 Equation of time 

 Local mean time 

 Mean of chronometer times 

 Chronometer slow of local mean time 

 Longitude west . . 



Chronometer slow of Greenwich mean time 



30.17 inches. 

 - 6 ° 53' 35"-4 

 ~33 i 47 



Double Altitudes of the Sun for Time, observed in Valparaiso, Chile, April 14th, 1866. 



+ 



79° 45' o' 

 9 h 53 m 14' 

 ! 8 



55 22 



45 58 

 9 23 



46 45 



56 9 



50"° 20 s . 5 

 5i i-5 

 5i 39 

 53 7 

 53 46 

 5.4 24.5 



3 6 ° 3° 



'5 







3 6 3° 

 '5 

 



Ex. ther. 65 





Refraction = 



= — 1 7o". 3 



Parallax = 



= + 8.1 



n 



Index correction. 



359 



359 



10' 40" 



40 



45 



o° 14' 50" 



45 

 5o 



10 41.6 



14 48.3 



Correction = 4- 17' ic".o 



At. ther. 66° Bar. 



Sun's declination -f 

 Latitude 



30.13 inches. 

 9° 33' 33" - 6 



Mean of observed double altitudes 

 Local apparent time . 

 Equation of time 

 Local mean time 

 Mean of chronometer times 

 Chronometer slow of local mean time 

 Longitude west ..... 

 Chronometer slow of Greenwich mean time 



33 



36 c 



4 h 

 + 

 4 

 3 

 o 



4 

 4 



47 



132 



11. 6 



24.8 



23.1 



i-7 



45-7 

 47-4 



23 



