AT THE OBSERVATORY, CAMBRIDGE, MASS. 

 DKCEMBE51 31, 1849. 



459 



JANUARY 1, 1850. 



A S, Micr. No. of 



h. m. s. &quot; Rev. obs. 



Mean . . . . 1 51 49.33 3.67 49.660 



Chronometer fast 59.37 - 0.00 Zero, 50.034 



Sid. time ... 1 50 49.% 3.67 0.374 9 



Ext. ther. 18. 



AS. 



Micr. No. of 

 Rev. obs. 

 53.325 



ft. m. J. 



Mean .... 2 7 32.50 32.25 



Chronometer fast 59.37 - 0.02 Zero, 50.034 



Sid. time . . . 2 6 33.13 032.23 3.291 2 



Observer, W. C. B. 



JANUARY 4, 1850, 



A*. 



Micr. 

 Rev. 



45.340 



h.m. s. 



Mean 1 47 59.42 46.08 



Chronometer fast . . . 1 0.60 0.03 Zero, 50.032 



Sid. time . 14658.82 046,05 4.692 



No. of 

 obs. 



Ext. ther, 25 , 



