Ch.il south AMERICA. 229 



health and vi2:our of all was in fome meafure im- 

 paired. 



CHAP. III. 



The Names of the Deferts and other Places where 

 the Signals were ereBed for forming the Series of 

 Triangles for meafuring an Arch of the Me- 

 ridian. 



IN order to gratify the curiofity of the reader with 

 regard to our operations, I fhall mention, in fepa- 

 rate articles, the places where each company made 

 their obfervations, and the time they were obliged to 

 remain there ; omitting a detail of circumftances, 

 many of which would be little more than a para- 

 phrafe on the fubje6t of the preceding chapter. Nor 

 fhall I here include thofe flations ufed in the year 

 1736, after meafuring the bafe of Yaruqui, both on 

 its extremities and in the deferts of Pambamarca and 

 Yllahalo ; for the difpofition of the triangles being 

 afterwards altered, they were repeated. Therefore, 

 confidering them as not ufed at that time, I fhall be- 

 gin with thofe flations in which no fuch circumftances 

 happened, and range them in the order they were 

 occupied. 



Deferts on which the ftgnals were ereEiedfor the operations 

 conducted by M. de la Condamine and myfelf. 



I. Signal on the defert of Pichincha, 



The fignal was at firfl: erected on the higheft funi- 

 mit of Pichincha ; but afterwards removed to an- 

 other ftation at the foot of the pic : the top having 

 been afterwards found not to be the moft proper place, 

 began our obfervations on this mountain on the 



0.3 HtH 



