220 
time of bringing cutlasses from Tarapoto or Nauta, and the months 
to wait before the Indians bring the wax, which they rarely ever do 
in full weight. 
The narrow-leaved Pithecolobium much resembles Chimbillas in 
aspect and in clinging on by its roots although the trunk may have 
fallen over almost horizontally. The small pods resemble those of 
the Inga, but the seeds are not involved in sweet cottony pulp like 
those of the latter. The Indians in passing a tree of Chimbilla 
laden with pods as they are now, generally contrive to snatch a 
handful, and suck them when they rest on their oars a few moments. 
Like all fresh fruits they are unwholesome in an aguish river. 
On the Bombonasa, as the current is not very strong nor the 
volume of water great, even Cecropias often do not fall entirely on 
slightly ascending shores from which the earth slides away as the 
water recedes. When thus half fallen over, they immediately begin 
to put forth buttresses from the lower part of them, as if by a 
species of instinct ; these buttresses are of very rapid growth, and 
soon get to be little inferior to the stem in thickness, so that a tree 
thus supported is with difficulty uprooted either by winds or water. 
I have noted the same peculiarity in nearly all the terrestrial 
margin and often growing together. Mauritia vinifera in some 
rake is very lofty, the head rising entirely above the surrounding 
orest. 
hrubs were few, and none in flower save an Acanthacea. 
Patches of a flabellate Selaginella, an Acanthacea with sulphur 
flowers, scented like the primrose, a Commelynacea (Dithyrocarpus) 
near a 1 urimaguas species, but larger. 
n moist places, on leaves of ferns and other plants, a good 
store of the curious Hookeria Patrisiae in fruit, which is rare. 
. sparingly, as it always does. The ubiquitous vesi- 
culose Hypnum was abundant. Save these there was nothing 
On the morning of the 12th, though the riparial vegetation was 
unchanged in general constituents, some new things were observed, # 
Humiriacea with white flowers alli 8 
trae, but no referrable to that genus. A curious fern exactly 
poe ti < Lindsaea m aspect, and form of pinnae, but with the 
ctification of a Diplazium, fronds 1}-4 feet. 
