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fectly arranged zones of vegetation that I have ever seen. In 
the background was a growth of Cecropia, a graceful tree perhaps 
fifty feet high, with slender spreading branches ; next below came 
a dense belt of chara (Gyxerium), or sometimes in place of this 
false banana (Heliconia); next, on the steeper bank, another 
coarse grass, but much lower than Gynertum, and, near the 
water, a low grass forming a rather dense sod. 
Fic. 27. Tower of Old Panama. 
We reached the first company station above Marraganti the 
second afternoon out, having passed the night on a sandbar 
without trouble either from mosquitoes or other insects. At 
this station I remained over one day to collect, but the region 
was very dry and quite like that lower down stream. On April 
14 I proceeded to the next station, called “ Cituro.” The greater 
part of this distance was made in the cabin of a forty-ton engine 
balanced over a two-foot gauge track. As the railway was not 
quite completed to the station, I walked the remaining two or 
