Apply with a brush a solution of gum-arabic to the shells, or immerse the eggs therein; let them dry, and afterwards pack them in dry charcoal dust. This prevents their being affected by any alterations of temperature. _Another Way._ Immerse them for a short time in strong lime-water, and they may be kept two years, if required. TO TEST THE PURITY OF FLOUR. Grasp a handful briskly, and squeeze it half a minute: if genuine, it will preserve the form of the cavity of the hand, even though rudely placed on a table; if adulterated, it will almost immediately fall down. TO PRODUCE ONE-THIRD MORE BREAD FROM A GIVEN QUANTITY OF CORN. Boil 5 lbs. of the coarsest bran in four gallons and half of water, keep stirring it, that it may not stick to the bottom, till reduced to four gallons, then pour it off into a trough, or tub full of holes, over which lay a coarse cloth or sieve. On the top of the whole put a wooden cover, with a weight sufficiently heavy to press out the liquor from the bran, which will sink to the bottom of the tub in a thick pulp. This liquor will contain the essential oil of the corn, and when kneaded in with half a hundred weight of flour, and the usual quantity of salt and yeast, it will yield one-third more bread than the same quantity of flour would, made with water in the usual way. Divide into middle sized loaves and bake two hours and a half. When ten days old put it into the oven for twenty minutes and it will appear quite new. TO MAKE FLOUR PASTE. Paste is made principally of wheaten flour boiled in water till it be of a glutinous or viscid consistence. It may be thus prepared simply for common purposes; but when it is required for paper hangings to rooms, it is usual to mix a fourth, fifth, or sixth of the weight of the flour of powdered resin; and where it is wanted still more tenacious, gum arabic, or any kind of size may be added. THE CHAMBER NURSE. Every experienced person, and every liberal physician and medical man, is sensible of the value of a careful, skilful, and kind-hearted nurse, and that the alleviation of sickness and the actual cure of diseases, depend as much on the anxious attention of the nurse, as on the efficacy of medicine itself. Good temper, patience, watchfulness, and sobriety, are the cardinal virtues of every good nurse, and when possessed by one who unites skill with those personal qualities, she is a treasure above all price. Although the chamber nurse forms no part of the establishment of healthy families, yet as in every family she is a necessary auxiliary for longer or shorter periods, a brief notice of her qualifications and duties, will confer completeness on such a volume as the present.