It is injurious to wear a green dress, if the colour have been imparted to it by means of _Scheele's green_, which is arsenite of copper--a deadly poison. I have known the arsenic to fly off from a _green_ dress in the form of powder, and to produce, in consequence, ill-health. Gas-light green is a lovely green, and free from all danger, and is fortunately superseding the Scheele's green both in dresses and in worsted work. I should advise my fair reader, when she selects green as her colour, always to choose the gas-light green, and to wear and to use for worsted work no other green besides, unless it be imperial green. DIET. 328. _Which is the more wholesome, coffee or tea, where milk does not agree, for a youth's breakfast_? Coffee, provided it be made properly, and provided the boy or the girl take a great deal of out-door exercise; if a youth be much confined within doors, black tea is preferable to coffee. The usual practice of making coffee is to boil it, to get out the strength! But the fact is, the process of boiling boils the strength away; it drives off that aromatic, grateful principle, so wholesome to the stomach, and so exhilarating to the spirits; and, in lieu of which, extracts its dregs and impurities, which are both heavy and difficult of digestion. The coffee ought, if practicable, to be _freshly_ ground every morning, in order that you may be quite sure that it be perfectly genuine, and that none of the aroma of the coffee has flown off from long exposure to the atmosphere. If a youth's bowels be inclined to be costive, coffee is preferable to tea for breakfast, as coffee tends to keep the bowels regular. Fresh milk ought always to be added to the coffee in the proportion of half coffee and half new milk. If coffee does not agree, then _black_ tea should be substituted, which ought to be taken with plenty of fresh milk in it. Milk may be frequently given in tea, when it otherwise would disagree. When a youth is delicate, it is an excellent plan to give him, every morning before he leaves his bed, a tumblerful of _new_ milk. The draught of milk, of course, is not in any way to interfere with his regular breakfast. 329. _Do you approve of a boy eating meat with his breakfast_? This will depend upon the exercise he uses. If he have had a good walk or run before breakfast, or if he intend, after breakfast, to take plenty of athletic out-door exercise, meat, or a rasher or two of bacon, may, with advantage, be eaten; but not otherwise. 330. _What is the best dinner for a youth_?