230 A VOYAGE TO Book V. 



14th of August 1737, buc could not finish them 

 before the beginning of December following. 



II. The signal on Oyambaro, the south extremity of 



the base of Yaruqui. 



On the 20th of December 1737, vve removed to 

 Oyambaro i and finished our observations necessary 

 to be made there on the 29th of the same month. 



III. Signal on Caraburu, the northern extremity of 



the base of Yaruqui. 



On the 30th of December vve passed to Caraburu, 

 and continued there till the 24th of January 1738. 

 This long stay was partly occasioned by the badness 

 of the weather, and partly by the want of signals. 



IV. Signal on the desert of Pambamarca. 



On this desert of Pambamarca, where we had be- 

 fore been in 1736, on finishing the measurement at 

 Yaruqui, a second signal was erected here, and we 

 went up the 26th of January, 1738, where we re- 

 mained tilt the 8th of February; and though we had 

 not here the difficulties of the ice and snow to strug- 

 gle with, as on Pichincha and other subsequent sta- 

 tions, yet we were extremely incommoded by the 

 velocity of the winds, which were so violent that it 

 was difficult to stand; and, notwithstanding the best 

 slielter possible to be procured, we often found it very 

 difficult to keep the instrument steady; which, of 

 consequence, greatly increased the difficulty of 

 making the observations with the necessary accuracy. 



V. Signal on the mountain of Tanlagua. 



On the 12th of February we ascended the moun- 

 tain of Tanlagua ; and having the next day finished 

 our observations, returned. If this mountain be but 



small 



