1894 
for medical treatment. Remained there till the 23rd when I returned 
Orizaba 
(Vera Cruz) 
to Orizaba again and resumed work. 
On the way back I had a fine opportunity to study the lay of the 
country below the border of the tableland, just east of Esperanza. It 
‘ i 
is evident that Mount Orizaba and the Sierra Hegra onoe formed a great 
glacial centre with ice streams extending down on the eastern slope to 
about 6000 feet near the town of M&ltrata. (Since this date, Don 
Florentino Sartorius tells me that there are glacial moraines at about 
5000 feet above Huatusco). 3©icrw Mirador at about 2800 feet, I saw a 
considerable number of drift boulders of volcanic rock which had evi¬ 
dently been brought down the slope from a considerably higher altitude 
but I saw no signs of glacial action and think they were brought down 
the slope by the notion of water from the place where they were probably 
left by glaciers. 
% ' ; 
Immediately after starting down the slope toward Orizaba, the country 
is changed from volcanie to limestone formation and the glacial action 
has scooped out deep basins leaving high knife blade ridges between. In 
one of these basins lies the town of Maltrata. Beginning on the east 
slope a short distance below the edge and extending down to the hills 
about Orizaba at an altitude of 4600 feet on H, slopes are the droof- 
leafed pines noted at Las ^igas. (At Mirador and near Huatusco these 
* 
i 
pines reach extreme lower limit at about 4000 feet). 
About the steep hills leading down the east slope of these mountains 
1 "'•**»- 
. 
the Mexican R,R, of Vera Cruz - the pioneer road of Mexico - cuts its 
4 
way at a high grade along sides and slopes that give beautiful views 
down into the deep valleys below. All north hill slopes are clothed 
with almost impenetrable thiokets and growths of low trees, while the 
south slopes are grassy with scattered trees and bushes. The hills are 
too steep for cultivation until Orizaba is passed, but the valleys about 
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