396 A JOURNEY IN BRAZIL. 
taken in time, and the statistics of the disease show that, 
where there are good physicians, it is found to be gradually 
disappearing. 
We must not leave Para without alluding to our evening 
concerts from the adjoining woods and swamps. When I first 
heard this strange confusion of sounds, I thought it came 
from a crowd of men shouting loudly, though at a little dis- 
tance. To my surprise, I found that the rioters were the 
frogs and toads in the neighborhood. I hardly know how to 
describe this Babel of woodland noises ; and if I could do it 
justice, I am afraid my account would hardly be believed. 
At moments it seems like the barking of dogs, then like the 
calling of many voices on different keys, but all loud, rapid, 
excited, full of emphasis and variety. I think these frogs, 
like ours, must be silent at certain seasons of the year ; for, 
on our first visit to Para, we were not struck by this singu- 
lar music, with which the woods now resound at nightfall. 
NOTE. Before leaving the Amazons, I wish to acknowledge attentions 
received from several friends, whose names do not appear in the narrative. 
To Senhor Danin, Chef de Police at Para, I was indebted for valuable In- 
dian curiosities, and for specimens of other kinds ; to Doctor Malcher for a 
collection of birds; to Senhor Penna for important additions to my collection 
of fishes ; to Senhor Laitno da Cunha for aid in collecting, and for many intro- 
ductions to persons of influence along our route; and to Mr. Kaulfuss, a Ger- 
man resident at Para, for fossils from the Andes. 
I have to thank Mr. James Bond, United States Consul at Para, for unwea- 
ried efforts in my behalf during the whole time of my stay in the Amazons. He 
supplied me with alcohol ; received the collections on their arrival at Para ; ex- 
amined the cases and barrels, causing those which were defective to be repaired, 
that they might reach their destination in safety, and finally despatched them to 
the United States, free of charge, on board sailing-vessels in which he had an 
interest. We owe it in great degree to him that our immense Amazonian col- 
lections arrived in Cambridge in good condition, suffering little loss or injury 
in the process of transportation. L. A. 
