316 



APPENDIX A 



On September 10th, returning from a reconnaissance survey of the 

 Pampaconas River, I joined Professor Bowman's party, Dr. Erving acting 

 as my assistant. We crossed the Cordillera Vilcapampa and the Canyon 

 of the Apurimac and after a week's rest at Abancay started the 

 topographic work near Hacienda San Gabriel south of Abancay. "Working 

 up the deep valley of Lambrama, observations for latitude and azimuth 

 were made midway between Hacienda Matara and Caypi. 



On October 4th we made our camp in newly fallen snow surrounded by 

 beautiful glacial scenery. The next day on the high plateau, we passed 

 sharp-crested glaciated peaks; a heavy thunder and hail storm broke out 

 while I occupied the station at the pass, the storm continuing all the after- 

 noon — a frequent occurrence. The camp was made 6 miles farther on, and 

 the next morning I returned to finish the latter station. I succeeded in 

 sketching the detailed topography just south of the pass, but shortly after 

 noon, a furious storm arose similar to the one the day before, and made 

 further topographic work impossible ; to get connection farther on I 

 patiently kept my eye to the eye-piece for more than an hour after the 

 storm had started, and was fortunate to catch the station ahead in a single 

 glimpse. I had a similar experience some days later at station 16,079, 

 Antabamba Quadrangle, on the rim of the high-level puna, the storm pre- 

 venting all topographic work and barely allowing a single moment in which 

 to catch a dim sight of the signals ahead while I kept my eye steadily at 

 the telescope to be ready for a favorable break in the heavy clouds and hail. 



At Antabamba we got a new set of Indian carriers, who had orders to 

 accompany us to Cotahuasi, the next sub-prefectura. Raimondi's map 

 indicates the distance between the two cities to be 35 miles, but although 

 nothing definite was stated, we found out in Antabamba that the distance 

 was considerably longer, and moreover that the entire route lay at a high 

 altitude. 



From the second day out of Antabamba until Huaynacotas was in sight 

 in the Cotahuasi Canyon, a distance of 50 miles, the route lay at an 

 altitude of from 16,000 to 17,630 feet, taking in 5 successive camps at an 

 altitude from 15,500 to 17,000 feet ; 12 successive stations had the following 

 altitudes : 



16,379 feet 

 16,852 



17,104 

 17,559 

 17,675 

 17,608 

 17,633 

 16,305 

 17,630 

 17,128 

 16,794 

 16,260 



-highest station occupied. 



