236 ASTRONOMICAL and 



1 cth. Took down and packed up the Inllruments. 



During my employ on the boundary I made it a point 

 to muhiply my aftronomical obfervations as much as pof- 

 fible when it did not interfere with my other bufmefs : 

 in this 1 had two views ; jirjl^ becaufe obfervations accu- 

 rately made never become obfolete, and may at fome fu- 

 ture day be found effentially ufeful, and fccondly^ to de- 

 termine by experiment, what reliance might be placed in 

 obfervations made at temporary ftations, without any of 

 the conveniences annexed to permanent obfervatories. — 

 The meridian being traced upon accurate principles, fur- 

 niflied an opportunity of comparing equal altitudes of 

 the fun, with the tranfits of his centre over the meridian. 

 The foregoing obfervations made at this ftation, furnilli 

 the two following comparifons. 



On the 26th of March the ©'s centre palfed \\\&\ ^^^ , „ ^ y^ 

 meridian at j 5J 3 • • 



Equal altituJes of the on ll\it Jay. 



h r It h / tt 



A. M. 9 3 52. P. M. 2 55 26.5 

 Add . *. 12 



14 SS 26.5 

 Deduft forenoon's obfcrvation . . . . 9 3 52 



2)5 5' 34 5 



Half 2 55 47.2 



Add forenoon's obfervation . . . . 9 3 5^ 



II 59 39.2 

 Dedud for chans^e of O's declination . . — 96 



0's centre paffcd the meridian by equal altitudes ii 59 29.6 



Which differs but T%ths of a fecond from his paflage over the meridian by 

 obfervation. 



On the 9tli of April the 0's centre pafled the| ^^^ ,_' -j,, - ^ j^ 

 meridian at J 



Equal 



