ON THE MERIDIAN. 317 



Meafurement . of the Bafe Linz near Gootyl 



EXPERIMENTS MADE FOR COMPARING THE CHAINS. 



PREVIOUS TO THE MEASUREMENT. 



AFTER THE MEASUREMENT. 



MONTH. 



1811. 



April 10th, 



Excess of the old 

 Chain. 



A. M. P. M. 



Mean 



DIVISIONS 

 31 



30 



30 



30 



31 



30 I 



31 



30 



31 



31.5 



31 



30.5 



31 



DIVISIONS 



30 



30.5 



30 



30 



31 



30 



31 



29.5 



30 



30 



REMARKS. 



30.62 



30,2 



Mean tempera, 

 ture during these 

 experimentSj 

 A. M. . . . 



o 

 81.2 



\ M. 



.... 101.6 



MONTH. 



1811. 



May nth ; 



Excess of 



the 

 Old Chain. 



REMARKS. 



A. M. 



.Mean 



DIVISIONS. 



38.25 



37.5 



38.5 



39 



39 



39 



38.5 



38.5 



39 



38 



37 



37 



38.27 



Mean temperature du- 

 ring these experiments 



a 



wag.... ..„...«.. .89.6 



TABLE containing the particulars of the Meafurement. 



— 3 



-' 



! 



2 

 3 

 4 

 5 * 



t o,- 



1300 

 700 

 900 



1100 

 800 







/ // 



12 3< 



2 42 



22 33 



30 57 



15 54 



to 



03 



id? 



■3S0 



Perpendicular. 



[Commencement 

 from the last. 



FELT. 



.00084 

 .00021 

 .01935 

 .04466' 

 .0085G 



Ascents. Descents 



FBET. 



FEET. 



4.78 

 0.55 

 5.90 

 9.90 

 3.70 



H4 



Abore. 



inches 



30 



Below. 



e a 



QJ — 



1^ Cli 



a 



H 



INCHES. 



9.8 

 10.8 

 12.3 



REMARKS. 



Commenced 12th Apr 

 1811. 



