Insects may, with great truth, be considered as a rank of beings so wonderful and extraordinary, as to strike with astonishment every observer, if we regard either their structure, powers, or use; and creatures, who, at the same time that they challenge our regard, loudly proclaim the wisdom, goodness, and omnipotence of their great Creator. If their shape and beauty are capable of attracting our notice, their ways of living are no less adapted for exciting our admiration; and the more we enquire into their nature and history, the more occasion we shall find for confessing this great truth, "nothing is created in vain." The wondrous manner in which numbers of them pass their lives, during their first states, is unknown to the greater part of mankind. Most people, indeed, know that a Caterpillar produces a Butterfly; but thousands of persons do not know that a Caterpillar is a Butterfly in disguise, as Dr. Lister ingeniously observes,[7] and as Swammerdam[8] proved to the great Duke of Tuscany, by stripping off the external skins, and displaying the butterfly concealed beneath them. Many persons are ignorant that plants (even of the most poisonous nature) are the beloved and favourite food of some species of insects, and that what is wholesome and nourishing to one, is pernicious and destructive to another. Who would believe that the hard substance of the soundest Oak was capable of being macerated by an insect, and received into its stomach as food? that it should there yield a proper nutriment for its growth, and that nothing but a substance as hard and firm as that could possibly contribute to the creature's health and increase? Who would imagine that a colony of Ants, an insect so contemptible in size, considered singly, were capable of making animals, of considerable bulk and strength, retreat from them as from a formidable enemy?[9] Who would suspect that numbers of insects are appointed to live, during the greatest part of their lives, within the bodies of other animals, many of whom receive no material injury thereby; some become frantic and {xv}diseased, and others are doomed to perish, and by their deaths give birth to these their inbred enemies? Who, that is a stranger to natural history, would believe that there are insects destined to live in the waters many months, where their principal employment is the destruction of animals less than themselves, on whom they feed and thrive, till they become inhabitants of the air, when their lives are terminated in a few weeks, perishing by the depredations of old age, if they are lucky enough to escape the power of other animals stronger than themselves? Yet such are the truths existing in nature; truths known to every one conversant with this study. In short, there is no part of the kingdom of nature, where so many wonders are unfolded to us, as in this of insects.