•Vn.n. 
1894 
Ameo&noca 
(Mexico) 
January 
ing seen the pepper tree. 
The volcano and Izt&cclhuatl are snowy, about as I saw them last 
February, and a careful study of the southwest slope of Istaccihuatl 
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shows that in addition to the glacier found by me last spring there is 
still another one lying on the southwest slope which descends from be¬ 
tween the chin and breast first in a southwesterly course and then 
changing to a more westerly one, bike the one first noted, it has now 
retreated from its old limits so as to leave out in bold relief the 
lateral moraines of ground up lava. Like the lateral moraines of the 
other glacier, these have a southwest course and lie at the same alti¬ 
tude on the mountain side, just below permanent snow line. This last 
glacier is smaller and more nearly ended than, the mate while near the 
feet (between hips and feet of the mountain) lies the basin of a third and 
smaller glacier now entirely gone end free from snot? at certain seasons. 
From this it becomes evident that the sculpturing of the mountain top 
to produce the outline known as the White Lady is wholly due to ice ac¬ 
tion, The extreme summit of the mountain is a slightly rounded table 
from which the ice once moved down on all sides to about 11,000 or 
11,500 feet. Cutting its way down through the softest parts of the 
summit three glacier basins, of small extent, were produced there as 
t 
well as numerous small basins lying somewhat lower down, including also 
the largest of all at the east end of the mountain just at timberline. 
After considerable study of the surface indications I cannot find any 
evidence to show that these glaciers. ever descended below 10,500 feet on 
the southwest slope of Iztaooihuatl, 
Mount Popocatepetl lies on the summit of the broad oasterward ex- 
i 0 
tending ridge from Iztaooihuatl, This ridge at the time of the greatest 
i 
glacial development was also covered by small thin glaciers much less 
heavy then those of Iztaooihuatl since the sunsnit of this ridge is near 
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