THE NATURAL HISTORY OF ANTS.[1]
Natural history is perhaps the most amusing of studies, though not so useful as botany or chemistry. It is curious to observe, however, on the score of utility, that the more minute parts of creation are of infinitely greater importance than the superior creatures in the scale of animal life. A knowledge of entomology is calculated to elicit more for the benefit of man, than an acquaintance with the habits of the larger brutes: the bee, the silk-worm, the cochineal insect, the Spanish fly, &c. &c. are far more essential to our purposes than the lion, the elephant, the rhinoceros, or the bear; even the sheep and the cow, only compete with these insects, as clothiers and victuallers; and the horse is merely physical force, subjected to the direction of the higher animal, man.
If we consider further, how very limited our research has yet been into the micrographick world, we may, without being thought too speculative, lose ourselves in the idea of the immensity of stores that remain to be discovered in the merest particles of animated nature: there is nothing too much to be imagined on the subject. But our business is rather to disclose the remarkable circumstances ascertained by the ingenious M. Huber, than to indulge in theorising; and we therefore proceed to his History of Ants, which we have found so entertaining, that we have no doubt it will furnish more than one interesting paper for our work.
The first chapter treats of the architecture of ants. The various habits of these wonderful insects are amply described; and were we not assured by ocular examination, of the truth of many of the particulars, we could hardly extend our belief to the prodigies related by the author: but we have witnessed so much that we can credit all. To return to the architecture; we find that their habitations, their cities, are not the least curious of their performances. Mr. Huber details the formation of a domicile by the fallow ants, and adds—
"Our little insects, now in safety in their nest, retire gradually to the interior before the last passages are closed, one or two only remain without, or concealed behind the doors on guard, whilst the rest either take their repose, or engage in different occupations in the most perfect security.
"I was impatient to know what took place in the morning upon these ant-hills, and therefore visited them at an early hour. I found them in the same state in which I had left them the preceding evening. A few ants were wandering about on the surface of the nest, some others issued from time to time from under the margin of the little roofs formed at the entrance of the galleries: others afterwards came forth who began removing the wooden bars that blockaded the entrance, in which they readily succeeded. This labour occupied them several hours. The passages were at length free, and the materials with which they had been closed scattered here and there over the ant-hill.
"Every day, morning and evening, during the fine weather, I was a witness to similar proceedings. On days of rain, the doors of all the ant-hills remain closed. When the sky is cloudy in the morning, or rain is indicated, the ants who seem to be aware of it, open but in part their several avenues, and immediately close them when the rain commences. It would appear from this they are not insensible of the motive for which they form these temporary closures.
"To have an idea how the straw or stubble roof is formed, let us take a view of the ant-hill at its origin, when it is simply a cavity in the earth. Some of its future inhabitants are seen wandering about in search of materials fit for the exterior work, with which, though rather irregularly, they cover up the entrance; whilst others are employed in mixing the earth, thrown up in hollowing the interior, with fragments of wood and leaves, which are every moment brought in by their fellow-assistants; and this gives a certain consistence to the edifice, which increases in size daily. Our little architects leave here and there cavities, where they intend constructing the galleries which are to lead to the exterior; and as they remove in the morning the barriers placed at the entrance of their nest the preceding evening, the passages are kept entire during the whole time of its construction. We soon observe it to become convex; but we should be greatly deceived did we consider it solid. This roof is destined to include many apartments or stories. Having observed the motions of these little masons through a pane of glass which I adjusted against one of their habitations, I am enabled to speak with some degree of certainty upon the manner in which they are constructed."
"I never found, even after long and violent rains, the interior of the nest wetted to more than a quarter of an inch from the surface, provided it had not been previously out of repair, or deserted by its inhabitants."