Captain Cook gives the following account of a very peculiar kind of ants, which he met with at Botany Bay. - "They are as green as a leaf. They live upon trees, where they build their nests. The nests are of a very curious structure : they are formed by bending down several of the leaves, each of which is as broad as a man's hand ; they glue the points of them together, so as to form a purse. The viscus used for this purpose is an animal juice, which nature has enabled them to elaborate. Their method of first bending down the leaves, our naturalists had not an opportunity of observing; but they saw thousands uniting all their strength to hold them in this position, while other busy multitudes were employed within, in applying the gluten that was to prevent their returning back. To satisfy themselves that the leaves were bent and held down by the efforts of these diminutive artificers, our people disturbed them in their work, and, as soon as they were driven from their station, the leaves on which they were employed sprang up with a force much greater than they could have thought them able to con quer, by any combination of their strength."