35 
or mountains, finally reaching sort of a plateau at Tres Cruces, 
the highest elevation reached by any railway in Argentina. 
Some hours later, in this case nearly midnight i the second day 
ar 
i at an elevation of ers, consists of 
buildings erected a terminal of a ie eing 
continue into Bolivia, the large viaduct crossing the 
stream separating the t republics having been completed 
at the f my visit. Several stores, a meteorological 
station, a large sprawling hotel building and a scattered col- 
io 
lection of small, low adobe huts complete the town, the streets 
ewing. 
the high elevation makes it very cool, the ae 
: ; na 
tation. No shrub over eighteen inches high was observed any- 
were in flower, these representing a considerable number of 
families. To the east, as well as to the west, snow-capped moun- 
tains were in view at this time of the year, but I was told they had 
no snow on them during the winter as there was no precipitation 
and the summer snows were blown off. There is no cultivation 
except that here and there along a stream a little eet patch 
will be devoted to barley or potatoes, the tubers of which reach 
only a very small size. Goats and an ae flock of sheep 
are seen and herds of llamas are met with. They are used for 
transportation and I believe are the principal source of the coarse 
woolen blankets used here. 
Collections were made on the surrounding plateau and among 
