AT THE OBSERVATORY, CAMBRIDGE, MASS. 

 DECEMBER 31, 1849. 



451 



A a cos. &amp;lt;5. 



Micr. No. of 



A a cos. J. 



Micr. No. of 



h. in. s. Rev. ob 



Mean . . . . 31 25.40 1 26.00 58.810 



Chronometer fast 59.18 0.07 Zero, 50.035 



Sid. time. . . 03026.23 125.93 8.775 5 



h. 7)1. S. 



Mean . . . . 44 34.66 

 Chronometer fast 59.18 



Sid. time . . 43 35.48 



Her. obs. 



1 7.72 56.843 



0.03 Zero, 50.035 

 1 7.66 6.808 6 



Ext. ther. 18. Observer, G. P. B. 



JANUARY 6, 1850. 



A. m. s. 



Mean 1 941.50 



Chronometer fast 1 1-09 



Sid. time . ... 1 8 40.41 



A a cos. (5. 



Micr. 

 Reu. 

 55.360 



52.27 



0.05 Zero, 50.026 



52.22 5.334 



No. of 

 obs. 



C.I 



Observer, G. P. B. 



h. m. s. 



Mean 1 53 25.92 



Chronometer fast ] 1.09 



Sid. time 1 52 24.83 



A a cos. J. 



Micr. 

 Rev. 

 47.464 



No. of 

 obs. 



25.11 



0.02 Zero, 50.026 



25.09 2,562 



Ext. ther. 17. 



