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There are no harvesting ants in Northern Europe, though they extend as far as Syria, Italy, and the Riviera, in which latter station I have often observed them busily working. What most careless observers take for grain in the nests of English ants are of course really the cocoons of the pupae. For many years, therefore, entomologists were under the impression that Solomon had fallen into this popular error, and that when he described the ant as ‘gathering her food in the harvest’ and ‘preparing her meat in the summer,’ he was speaking rather as a poet than as a strict naturalist. Later observations, however, have vindicated the general accuracy of the much-married king by showing that true harvesting ants do actually occur in Syria, and that they lay by stores for the winter in the very way stated by that early entomologist, whose knowledge of ‘creeping things’ is specially enumerated in the long list of his universal accomplishments.

Dr. Lincecum of Texan fame has even improved upon Solomon by his discovery of those still more interesting and curious creatures, the agricultural ants of Texas. America is essentially a farming country, and the agricultural ants are born farmers. They make regular clearings around their nests, and on these clearings they allow nothing to grow except a particular kind of grain, known as ant-rice. Dr. Lincecum maintains that the tiny farmers actually sow and cultivate the ant-rice. Dr. McCook, on the other hand, is of opinion that the rice sows itself, and that the insects’ part is limited to preventing any other plants or weeds from encroaching on the appropriated area. In any case, be they squatters or planters, it is certain that the rice, when ripe, is duly harvested, and that it is, to say the least, encouraged by the ants, to the exclusion of all other competitors. ‘After the maturing and harvesting of the seed,’ says Dr. Lincecum, ‘the dry stubble is cut away and removed from the pavement, which is thus left fallow until the ensuing autumn, when the same species of grass, and in the same circle, appears again, and receives the same agricultural care as did the previous crop.’ Sir John Lubbock, indeed, goes so far as to say that the three stages of human progress–the hunter, the herdsman, and the agriculturist–are all to be found among various species of existing ants.

The Saueba ants of tropical America carry their agricultural operations a step further. Dwelling in underground nests, they sally forth upon the trees, and cut out of the leaves large round pieces, about as big as a shilling. These pieces they drop upon the ground, where another detachment is in waiting to convey them to the galleries of the nest. There they store enormous quantities of these round pieces, which they allow to decay in the dark, so as to form a sort of miniature mushroom bed. On the mouldering vegetable heap they have thus piled up, they induce a fungus to grow, and with this fungus they feed their young grubs during their helpless infancy. Mr. Belt, the ‘Naturalist in Nicaragua,’ found that native trees suffered far less from their depredations than imported ones. The ants hardly touched the local forests, but they stripped young plantations of orange, coffee, and mango trees stark naked. He ingeniously accounts for this curious fact by supposing that an internecine struggle has long been going on in the countries inhabited by the Sauebas between the ants and the forest trees. Those trees that best resisted the ants, owing either to some unpleasant taste or to hardness of foliage, have in the long run survived destruction; but those which were suited for the purpose of the ants have been reduced to nonentity, while the ants in turn were getting slowly adapted to attack other trees. In this way almost all the native trees have at last acquired some special means of protection against the ravages of the leaf-cutters; so that they immediately fall upon all imported and unprotected kinds as their natural prey. This ingenious and wholly satisfactory explanation must of course go far to console the Brazilian planters for the frequent loss of their orange and coffee crops.