That infinity of experiments which Chemistry opens to our view, and that infinity of subjects for examination in Natural History, makes it necessary to begin at those two sciences as early as possible. The elements of Chemistry, a knowledge of which is so essential in all the relations of life, might be simplified for an adaption to the meanest capacity, and even to that of children beginning to read, of which I have before pointed out two familiar instances, upon which a more enlarged explanation might be made, and to which a thousand others equally simple and instructive might be added. In Natural History what a vast field is open? wherein "To teach the young idea how to shoot." Here every thing both in the animal and vegetable world, which comes under the every day observation of the child, or even the grown person, might be familiarly described and explained in our school-books by a regular classification and arrangement. By such a system of education as this, the youth would instinctly and involuntarily read a useful lesson in every object that came within his view; his mind would be incessantly led to a contemplation of Nature, a knowledge of which can alone lead a man to true and substantial happiness. No part of matter would then escape the scrutinizing disposition of man, he would explore the ocean and the rivers, the mountain and the valley, the forest and the plain, the bowels of the earth and its atmosphere, and even the surface and atmosphere of other orbs to gratify his scientific and laudably insatiate curiosity. The blade of grass, the leaf, the tree, its fruit, the flower-bed with all its vivid tints and animating effluvia, with all the infinite variety both in the vegetable and animal world, would alike form matter for his scientific research, and objects for him to explore. Here in contemplating the stupenduous organization which constitutes animal and vegetable life in Nature's infinite variety, all varying, yet all connected by one common link, operating by one common cause, and to one common end, a successive production and decay, decay and production, the human mind might find an exercise as infinite, and have ideas stirred up equally stupendous. I cannot help exclaiming: This is the path of Nature: tread here, O Man! and be happy.