XX 



Astronomical and Meteorological Records^ £sPc. 



Equal altitudes of Sun to find error of Time-piece, (pocket chrono- 

 meter,) at noon. 

 Time from Noon, Time from Noon, Error of Time- 



P. M. 



Dec. 3, 1819. 



piece. 



5' 23" 24'" fast. 

 Mean time. 



Equal altitudes of Sun to find error of Time-piece, (pocket chrono- 

 meter,) at midnight. 



Dec. 3, 1819. 



Error of Time- 

 piece. 



5' 43" 30"' fast. 

 Mean time. 



Equal altitudes of Sun to find error of Time-piece, (pocket chro- 

 nometer,) at noon. 



Dec. 4, 1819. 



Time from Noon, 

 A M. 



2" 40' 28" 

 2 38 03i 

 2 35 42A 



Time from Noon, 

 P.M. 



2" 32' 024- 

 2 29 



2 27 



' o^" 1 



41 [ 



Error of Time- 

 piece. 



5' 34" 07'" fast. 

 Mean time. 



Rate of Time-piece, (pocket chronometer,) at 

 ment, between the 2.4th September and the 4th 

 ducedfrom the preceding observations. 



Sept. 24, 1819, at noon. 



Nov, 



Dec. 



25 

 26 

 27 

 16 

 24 

 26 



») 

 27 



28 



3 



?? 

 4 



do 



do 



do 



do 



do 



do 

 at midnight 

 at noon, 

 at midnight, 

 at noon, 

 at midnight, 

 at noon, 

 at midnight, 

 at noon. 



Fast for 

 mean time, 

 do 

 do 

 do 

 do 

 do 

 do 

 do 

 do 

 do 

 do 

 do 

 do 

 do 

 do 



Engineer Canton- 

 December, as de- 



I Var. for 12 hours. 



8' S5" 30' 



8 15 40 



8 05 10 



7 55 00 



5 35 00 



4 35 



37 



9" 55" 

 5 15 



05 



24 

 42 

 51 



losing. 



do 



do 



do 



do 

 gaining. 



do 

 losing, 

 gaining, 

 losing, 

 gaining. 



do 



do 

 losinff. 



During the time for which the rate of the pocket chronometer was 

 determined as above shown, it was kept suspended in the cabin of 

 the steam boat, which, during the day was kept warm by fire, gene- 



