In teaching the sciences, particularly the science of natural philosophy, this method of employing the principle of analysis has been found equally successful. Nature indeed, by the regular division of her several works, has obviously pointed this out as the proper method of proceeding, especially with the young; and the success that has invariably accompanied the attempt, shews that the opinion is well founded. In the experiment at Aberdeen, the class of children, who were specially selected from their companions on account of their ignorance only a few days before, were "interrogated, scientifically, as to the production, the nature, and the properties of several familiar objects, with the view of shewing how admirably calculated the Lesson System is, for furnishing the young with a knowledge of natural science and of the arts. One of their little companions being raised before them on a bench, they described every part of his dress, from the bonnet downwards, detailing every process and stage of the manufacture. The bonnet, which was put on his head for this purpose, the coat, the silk-handkerchief, the cotton vest, were all traced respectively from the sheep, the egg of the silk-worm, and the cotton-pod. The buttons, which were of brass, were stated to be a composition of copper and zinc, which were separately and scientifically described, with the reasons assigned, (as good as could be given,) for their admixture, in the composition of brass." "A lady's parasol, and a gentleman's watch were described in the same manner. The ivory knob, the brass crampet, the bamboo, the whalebone, the silk, were no sooner adverted to, than they were scientifically described. When their attention was called to the seals of the gentleman's watch, they immediately said, 'These are of pure, and those of jeweller's gold,' and described the difference. The steel ring was traced to the iron-stone in the mine, with a description of the mode of separating the metal from its combinations. The processes requisite for the preparation of wrought-iron from the cast-iron, and of steel from the wrought-iron, with the distinguishing properties of each of these metals, were accurately described, and some practical lessons drawn from these properties; such as, that a knife ought never to be put into the fire, and that a razor should be dipped in warm water previous to its being used. Various articles were collected from individuals in the meeting, and successively presented to them, all of which they described. India-rubber, cork, sponge, pocket combs, &c. A small pocket thermometer, with its tube and its mercury, its principles and use, and even the Turkey-leather on the cover, were all fully described. After explaining the nature and properties of coal-gas, one of the boys stated to the meeting, that since the commencement of this experiment, he had himself attempted, and succeeded in making gas-light by means of