40 



ASTRONOMICAL OBSERVATIONS 



] 



Bedevilled Beach (Station Cape Ingkfield), August 12, 1S53. Theodolite observations for time. 



Circle east. Chronometer. 



Circle west. 







IQb 23™ 27= 



10 26 57 



10 30 28 



10 35 IG 



8.0 

 12.0 



15.2 

 5.0 



12.2 



11.2 

 10.0 



Rending. 



1i° IT 55'' 

 18 05 

 18 05 

 17 50 



74 28 10 



15 



15 



5 



75 10 15 



30 

 25 

 20 



195 58 5 

 58 



57 45 



58 5 



O 



O 



Circle east. 



o 



lOi" 39'" 35'' 



10 42 32 



10 4G 34 



10 50 49 



11.4 

 10.4 



10.5 

 11.2 



11.8 

 10.0 



13.0 



8.2 



Reading. 



195° 45' 30'' 



5 







10 



6 



50 



50 







5 



52 40 

 52 40 

 52 55 



76 10 30 

 40 

 45 

 45 



195 5 

 4 

 4 

 5 



194 53 



(Note. — Between the 13th and 14th there were two more observations taken, for which, however, 

 there is no need.) Atmospheric temperature and pressure as above. 



Reduction. 



Taking means, we find O E. 10'' 25°' 12^ 



O E. 10 30 28 



W. 10 37 25 



OW. 10 44 33 



0E. 10 50 49 

 50'^ 74° 46' 37' 



O E. 

 O W. 



101' 27" 

 10 40 59 



Mean | 10 34 25 

 Apparent altitude 

 A 



Time of observation 

 Time by chronometer 



Error 

 Mean 



195 25 15 



74 40 42 

 15 19 18 

 15 15 48 



75 11 17 

 78 34 30 



84 30 48 



86 12 14 



5U 49m 308.3 



10 34 25.0 



74° 22' 56' 



75 10 18 

 195 51 36 

 194 58 53 



76 10 35 



O W. 



O E. 



Reduction to G + 15' 50" 

 _15 50 



195° 14' 43'' 

 75 54 45 



75 20 01 



14 39 59 



74 36 19 



75 11 26 

 78 34 30 



84 11 07 



89 31 06 



6U 02"" 4:5'. 1 



10 47 41.0 



10'' 47"' 4P 



-4 44 54.7 4 44 55.3 



-4 44 55.0 which was used in the reduction for latitude. 



August 23, 1853. Station 3 miles E. S. E. from the brig (either in Force Bay or Van Rensselaer 

 Harbor). Sextant observations of circum-meridian altitudes of the sun. 



Chronometer time. 



O 4'' 37 "> 2» 



39 17 



40 42 



O 



4 43 25 

 44 30 

 46 00 



Double altitude. 



45° 14' 30" 



14 45 



15 00 



46 18 00 

 18 10 

 18 10 



Chronometer time. 



4h 48m 20^ 



49 43 



50 40 



4 52 



54 



55 12 



Mr. Sonntag deduced the latitude 78° 37' 9" 



