What wonder is it, if even the well-disposed among the multitude, seeing such dissension among the counsellors, gathering just enough from their disputes to infer that they have no true philosophical basis for their opinions, and seeing those who would set the example in practice of this art without science of dietetics generally among the most morbid and ill-developed specimens of humanity, just throw aside all rule upon the subject, partake of what is set before them, trust to air, exercise, and good intentions to ward off the worst effects of the promiscuous fare? Yet, while hopeless at present of selecting the right articles, and building up, so far as hereditary taint will permit, a pure and healthful body from feeding on congenial substances, we know at least this much, that stimulants and over-eating--not food--are injurious, and may take care enough of ourselves to avoid these. The other branches we can really act wisely in, Dr. Warren, after giving the usual directions (rarely followed as yet) for airing beds, and sleeping-rooms, adds,-- "The manner in which children sleep will readily be acknowledged to be important; yet very little attention is paid to this matter. Children are crowded together in small, unventilated rooms, often two or three in a bed, and on beds composed of half prepared feathers, from which issues a noxious effluvia, infecting the child at a period when he is least able to resist its influence; so that in the morning, instead of feeling the full refreshment and vigor natural to his age, he is pale, languid, and for some time indisposed to exertion. "The rooms in which children are brought up should be well aired, by having a fireplace, which should be kept open the greater part of the year. There never should be more than one in the same bed; and this remark may be applied with equal propriety to adults. The substance on which they lie should be hair, thoroughly prepared, so that it should have no bad smell. In winter it may be of cotton, or of hair and cotton. It would be very desirable, however, to place children in separate apartments, as well as in separate beds. "It has been justly said that adults as well as children had better employ single instead of double beds; this remark is intended to apply universally. The use of double beds has been very generally adopted in this country, perhaps in part as a matter of economy; but this practice is objectionable, for more reasons than can be stated here." On the subject of exercise, he mentions particularly the triangle, and we copy what he says, because of the perfect ease and convenience with which one could be put up and used in every bed-chamber.