We asked him how he had studied the river ? ♦ Why sir, I waded from the Post to Fott Gibson three summers, and I guess I took pains to touch bottom.' The distance is near 600 miles : think of that, reader ! His sound ings were as follows: — ankle! half call! whole calf! half knee! knee! half thigh! thigh! deep thigh was as deep as he ever wished water lor the Trident; she ran from that depth down to a bare sprinkling on the bars ; at a greater depth than 'by the deep thigh,' the orders are usually given, 'head her ashore !' " This will do for the Upper Arkansas, but a match for it may be found in Illinois river : — An editor, in passing down the Illinois river in a little stern wheel boat called the Agatha, which craft drew about 16 inches water, says, we were much amused at the novelty of the thing, when approaching Bardstown, the en gine was stopped and given a Mick back,' for the boat to allow a Hoosier team that was ford ing the stream to pass. It is no uncommon occurrence, we are told, now for the captain of a boat, of a dark night, to wade ahead, with a lantern in his hand, to point out the channel ! This saves the necessity of throwing out the lead, the pilot singing out ' knee deep," and ' all is well.' " — American paper, Insect Slavery. — The most remarkable fact connected with the history of ants is the propensity possessed by certain species to kidnap the workers of other species and com pel them to labour for the benefit of the com munity, thus using them completely as slaves; and as far as we yet know, the kidnappers are red or pale-colored ants ; and the slaves, like the ill-treated natives of Africa, are of a jet black. The time for " capturing slaves ex tends over a period of about ten weeks, ai<d never commences until the male and female are about emerging from the pupa state ; and thus the ruthless maurauders never interfere with the continuation of the species. 