42 MEASUREMENT OF AN ARC 



Triangles depending on the bafe near Daumergidda, and carried 

 Joutherly to the distance between Inpahgiilt and Darroor hilL 



^. MEASUREMENT OF THE BASE LINE NEAR DAU^ 



MERGIDDA. 



Ixperimenfs made for comparing the chains after the measurement. 



1815. 



february 15Ji, A. M, 



,f. M. 



'A- .M 



fcjSCess of ill 

 ()l<i chain 



Meat 



Divisi n\s, 

 43.2 

 46. 

 46. 

 46. 

 45. 



45,5 



45 5 



46. 



45.5 



45. 



45.5 



45. 



45. 



45.63 



RKiVlARKs, 



Seaia Te5!;!per»l8.re dafing tliesc EjpenmeatSj was ^l' 



IV^o^e.— 45.63 divisions of the micrometer is eq«al t© ,01823 fee', aod at Hydrabfid, wiierc the comparisflag 

 Were made, the old chaia exceedud tha new one ,01756 ^foetj llie diffcreaccj eq,uaHo ,0072 feet is the vear. 



