ON THE MERIDIAN, 



remeni o 



*ase hint near 





Experiments made for comparing the Chaint 



'. 





PREVIOUS 



TO THE MEASUREMENT. } 



AFTER THE MEASUREMENT. j 



1 



1809 



Excess of 



the 

 Old Chain. 



REMARKS. 



1 



1 

 1809 



1 



Excess of 



the 

 Old Chain. 



REMARKS. I 



MONTH. 



February 27th 

 P. M. 



DIVISIONS. 



30. 



29. 



31.5 



29. 



29. 



29. 



29. 



■ 



! The mean tempera. 



MONT51. 



March 20th 

 A. M. 



DIVISIONS. J 



39. 



39.5 



39. 



40. 



39. 



39. 



39. 



i 



The mean tempera- 







29. 

 29.5 



ture during these ex- 





39. 

 39. 



ture during these ex= 





28th 

 A. M. 



Mean 



29.75 



30.5 



30.5 



29. 



30.5 



periments was 83.24. 



Mean 



38.5 

 38.5 

 39. 



39. 



39.04 



periments was 79. 1 3.1 



29.66 







ar 



