^42 A VOYAGE TO Book V, 



misplaced, so as not to be seen from that erected on 

 Corazón ; and consequently there was a necessity for 

 removing it. And though, in order to do this, they 

 ascended the mountain on the 28th of January, they 

 found it necessary to return thithei on the 7th of Fe- 

 bruary, when they were fortunate enough to finish 

 every thing remaining the very next day. 



VIL Signal on the desert of Corazón. 



This mountain also the gentlemen were obliged to 

 visit twice ; the first journey was on ti.e 2och of Ja- 

 nuary, and the second on the i2Lh of March, 1738. 



VIIÍ. Signal of LImpie-pongo, on the desert of 

 Cotopaxi. 



They went up to the desert of Cotopaxi on the 

 1 6th of March, and remained there till the 3 1 st ; when 

 they observed that the signal of Guamani was not vi- 

 sible from thence, and therefore it was necessary to 

 erect another in the intermediate space ; which being 

 completed on the 9t;h of August, they again repaired 

 to the sip.nal of Limpie pango, on Cotopaxi ; where 

 they finished all their operations by the 13th of the 

 same montli, and left every thing in exact order. In 

 ascending the mountain in this second journey, the 

 mule on v^ihich Don George Juan rode fell down a 

 breach four or fiv(^. toises deep, but providentially 

 without receiving the least hurt. 



As they had been obliged to erect another signal 

 between those of Guamani and Limpie-pongo, in 

 order to continue the series of triangles ; so there was 

 also a necessity for returning to some stations, to 

 observe attain the an2:ies which had before been de* 

 termined. These operations, together with the ex- 

 periments on the velocity of sound, and the observa- 

 tions at the new signal, filled up the interval from. 

 - . the 



