The trade here is principally in Brazil-nuts, salsaparilha—which is the best on the Amazon,—farinha, and salt-fish,—some of which articles are obtained from the Mundrucús, an industrious tribe of Indians inhabiting the Tapajoz. There are here, as in Pará, many persons who live an idle life, entirely supported by the labours of a few slaves which they have inherited. The local executive government consists of a “Commandante Militar,” who has charge of the fort and a dozen or two of soldiers; the “Commandante dos trabalhadores,” who superintends the Indians engaged in any public service; the “Juiz de direito,” or civil and criminal judge of the district; the “Delegardo de policia,” who has the management of the passport office, the police, etc., the “Vicario,” or priest, and a few subordinate officers. In the evening some of these, and a few of the principal traders, used generally to meet in front of Captain Hislop’s house, which was in an airy situation overlooking the river, where they would sit and smoke, take snuff, and talk politics and law for an hour or two. Besides the Captain, there were two Englishmen in Santarem, who had resided there many years, and were married to Brazilian women. A day or two after our arrival they invited us to take a trip up to a pretty stream which forms a small lake a mile or two above the town. We went in a neat canoe, with several Indians and Negroes, and plenty of provisions, to make an agreeable picnic. The place was very picturesque, with dry sands, old trees, and shady thickets, where we amused ourselves shooting birds, catching insects, and examining the new forms of vegetation which were everywhere abundant. The clear, cool water invited us to a refreshing bathe, after which we dined, and returned home by moonlight in the evening. I was acquainted with the “Juiz de direito,” having met him in Pará, and he now very kindly offered to lend me an excellent canoe to go to Montealegre, and to give me introductions to his friends there; but he had no men to spare, so these I had to obtain as I could. This was, as is always the case here, a difficult matter. Captain H. went with me to the Commandante, who promised to give me three Indians, but after waiting a whole week we got only two; the Juiz however kindly lent me one with his canoe, and with these we started. The first night we staid at a cacao-plantation, where we got some excellent fresh fish. In the morning we took a walk among the cacao-trees, and caught numbers of a butterfly (_Didonis biblis_), which, though a common South American species, we had never found either at Santarem or Pará; nor did I ever after see it until I reached Javíta, near the sources of the Rio Negro. As another instance of the peculiar distribution of these insects, I may mention that during four years’ collecting I saw the beautiful _Epicalia Numilius_ only twice,—once at Pará, and once at Javíta, stations two thousand miles apart.