Astronomical and Meteorological Records, £s?c. xxi 



rally as high as the temperate point, and sometimes above it. At night 

 the temperature of the cabin was generally near the freezing point, 

 and particularly, in the latter part of November, the thermometer va- 

 ried from 2° to 22° below freezing, according to Fahrenheit's scale. 

 The chronometer was, moreover, wound up every morning at nearly 

 the same hour. 



Dec. 9, 1819. 



Dec. 15, 1819. 



Meridian double altitude of 

 sun's upper limb 



Index error, — 45". Latitude 



deduced 

 Meridian double altitude of 



sun's upper limb 



Index error, — SO". Latitude 

 deduced 



52° 08' 45' 



41 25 00 N. 

 51 13 30 



41 25 00 N. 



Equal altitudes of Sun to find error of Time-piece, (box chronome- 



ter,) at noon. 



Dec. 17, 1819. 

 Dec. 19, 1819. 



Time from Noon, 

 A. M. 



2" 36' 41|" 

 2 34 21 



Time from Noon, 

 P.M. 



2" 4 



2 41 31 



5U" 



Error of Time- 

 piece. 



7' 21" fast. 

 Mean time. 



Meridian double altitude of > 



sun's upper limb - 5 



Index error, — 40". Latitude ^ 



deduced - - 3 



50° 55' 00' 



41 25 01 N. 



Equal altitudes of Sun to find error of Time-piece, (box chronome- 

 ter,) at noon. 



Dec. 19, 1819, 



Time from Noon, 

 A.M. 



Si^ 11' 54" 

 2 09 06 

 2 06 20i 



Time from Noon, 

 P. M. 



2" 14' 05 

 2 11 21 

 2 08 S3 



.} 



Error of Time- 

 piece. 



3' 52" fast 

 Mean time. 



Equal altitudes of Sun to find error of Time-piece, (box chronome- 

 ter,) at midnight. 



Dec. 19, 1819. 



Time before mid- 

 nicfht. 



9"^ 33' 17" 

 9 30 46 

 9 28 17 



Time after mid- 

 night. 



9" 34' 25-1" 

 9 31 56 

 9 29 26 



1 



Error of Time- 

 piece. 



3' 02" 22'" fast. 

 Mean time. 



