plains, would often point out the pricking of an Opossum's nails on the bark of a Eucalyptus or other tree, and indicate by his actions that in yonder hole, high up, was sleeping an Opossum, a Phalangista, or a Flying Petaurus. Even the objects brought to our bush-fires were enough to incite a desire for a more extended knowledge of Australia's Mammals; for numerous were the species of Kangaroos and Opossums that were nightly roasted and eaten by these children of nature. Perchance a half-charred log, or the heated hollow branch of a Eucalyptus, would send forth into the lap of one or other of the surrounding guests the Acrolates pygmæus, the white-footed Hapalotis, or other small quadruped. Tired by a long and laborious day's walk under a burning sun, I frequently encamped for the night by the side of a river, a natural pond, or a water-hole, and before retiring to rest not unfrequently stretched my weary body on the river's bank; while thus reposing, the surface of the water was often disturbed by the little concentric circles formed by the Ornithorhynchus, or perhaps an Echidna came trotting up towards me. With such scenes as these continually around me, is it surprising that I should have entertained the idea of collecting examples of the indigenous Mammals of a country whose ornithological productions I had gone out expressly to investigate? To have attempted to acquire a knowledge of more than the Birds and Mammals would have been unwise; still I was not insensible to the interest which attaches to its insects and to its
