Except when roused by hunger, the Serpents are generally in a state of torpor during the day, but as night draws on, they, in common with other wild denizens of the forest, are roused into activity. In their native state the Boas then lie in wait, coiled round the branches of trees, ready to spring upon the antelopes and other prey as they pass through the leafy glades; and the smaller serpents silently glide from branch to branch in quest of birds on which to feed. As we have had the opportunity of seeing the Reptile-house by night, we will describe the strange scene. About ten o’clock one evening during the last spring, in company with two naturalists of eminence, we entered that apartment. A small lantern was our only light, and the faint illumination of this, imparted a ghastly character to the scene before us. The clear plate-glass which faces the cages was invisible, and it was difficult to believe that the monsters were in confinement and the spectators secure. Those who have only seen the Boas and Pythons, the Rattlesnakes and Cobras, lazily hanging in festoons from the forks of the trees in the dens, or sluggishly coiled up, can form no conception of the appearance and actions of the same creatures at night. The huge Boas and Pythons were chasing each other in every direction, whisking about the dens with the rapidity of lightning, sometimes clinging in huge coils round the branches, anon entwining each other in massive folds, then separating they would rush over and under the branches, hissing and lashing their tails in hideous sport. Ever and anon, thirsty with their exertions, they would approach the pans containing water and drink eagerly, lapping it with their forked tongues. As our eyes became accustomed to the darkness, we perceived objects better, and on the uppermost branch of the tree in the den of the biggest serpent, we perceived a pigeon quietly roosting, apparently indifferent alike to the turmoil which was going on around, and the vicinity of the monster whose meal it was soon to form. In the den of one of the smaller serpents was a little mouse, whose panting sides and fast-beating heart showed that it, at least, disliked its company. Misery is said to make us acquainted with strange bed-fellows, but evil must be the star of that mouse or pigeon whose lot it is to be the comrade and prey of a serpent!