sor Bowman's account of the geo- 

 logical cross-section made in 191 1. 

 In describing his work on this 

 map, Mr. Bumstead says : 



"With such meager control as 

 time and bad weather permitted, I 

 endeavored to make a map of as 

 wide a strip of country as possible, 

 that would first of all convey the 

 same impression of the topography 

 upon the person who should use 

 the map as I had at the time that I 

 made it; that is, I wanted my map 

 to accurately describe the char- 

 acter of each mountain and valley 

 shown. This I kept ever in mind, 

 and frequently reached out five or 

 six miles with estimated distances 

 to sketch features as I saw them, 

 knowing that even though their 

 positions and elevations were far 

 from right, the picture brought to 

 mind by the use of the map would 

 be far better than nothing at all. 



"In the main, however, the map 

 is fairly well controlled, and in the 

 snow-and-glacier-covered m o u n- 

 tains around Choquetira and Arma 

 I took very great pains not only to 

 show a good picture of this won- 

 derful region, but to make an ac- 

 curate and dependable topographic 

 map as well, and I got good loca- 

 tions and elevations on all the peaks 

 and many other points besides. 



"In making this map we followed 

 the route of Professor Bowman in 

 191 1. He expected the work to be 

 done in 21 days. I think it could 

 have been done in 30 days of good 

 weather, and done even better than 

 I did it, though I took three months, 

 as I was hampered by fog and rain 

 and snow almost continually from 

 the time we left Abancay. It was 

 aggravating in the extreme to catch 

 glimpses of the wonderful scenery 

 as the clouds would lift or settle 

 and then have the peaks disappear 

 from view before they could be lo- 

 cated and sketched," 



It was hoped that Mr. Bumstead 

 would be able to locate and get the 

 elevation of Mount Salcantay while 

 on this trip, but it remained cloudy 

 during: the entire time. 



510 



