202 ASTRONOMICAL and 



which added to 23 days will give for the time at Gi-eenwich 23* z"" 42' 4" 

 from which deduft the apparent lime ot" the obfei-vation 22 21 2 41 



Longitude of the place of obfervation weft . . o 5 39 23 



The above determination of the geographical pofition 

 of the place of obfervation,- is probably as correct, if not 

 more fo, than in our befl: charts. From this example it 

 may be fecn with what eafe, both the latitudes, and lon- 

 gitudes ot places may be determined on land for common 

 geographical purpofes with a good fextant, a well made 

 watch wath feconds, and the artificial horizon, the whole 

 of which may be packed up in a box of 1 2 inches in 

 length, 8 in width, and 4 in depth. 



This paper being now carried to the length intended, 

 and embracing the objeds propofed, I have only to add 

 that 



I am with fmcere efteem, 



Your friend,. &c. 



AND^^- ELLICOTT. 



Mr. Robert Patterson, 

 V. P. American Philofo • 

 phical Society. 



No. 



