More than this is required. There must be perfect order with the greatest degree of safety attainable. Inflammable or explosive substances must not be stowed together, and the arrangement must be such that any article needed can be reached on the instant. Emergencies often arise in which the safety of the ship itself is dependent on having needed appliances or material in the hands of certain officers without a moment's delay. It may be nothing more than a case of oil, or it may be the duplicate of some broken rod, bolt, or plate of the delicate mechanism of the great propelling engine or of the dynamo, which is the very life centre of the modern war-ship. Paterfamilias, grumbling at the shopping memorandum of his wife and daughters on the eve of their Mediterranean vacation trip, would gasp at the list which Uncle Sam must fill, for a long cruise of one of his naval vessels. Here is a single order sent to one wholesale house on the _Osprey's_ account, that week in June: Loaf sugar, brown sugar, powdered sugar, fair molasses, Ceylon tea, Hyson tea, Java coffee, Rio coffee, smoked ham, American rice, breakfast bacon, lambs' tongues, pigs' feet, corned beef, corned pork, leaf lard, dried peas, dried beans, coffee extract, chiccory, chocolate, Swiss cheese, English cheese, New York dairy cheese, canned tomatoes, canned peaches, canned onions, canned asparagus, canned peas, canned corn, canned beets, olives and olive oil, sauces and catsups, oatmeal and flour, limes and lemons, fruit jellies, condensed meats, beef extracts, Jamaica ginger, mustard and spices, cigars and tobacco, corn-meal and hominy, sago and tapioca, crackers and biscuits, lime juice, fresh and limed eggs, baking powder, canned cherries, canned plums, canned pears, canned rhubarb, dried apples, canned salmon, canned oysters, canned clams, sardines, canned lobster, canned mackerel, canned codfish, kippered herring, Yarmouth bloaters, canned ox tongues, canned tripe, canned mutton, canned chicken, canned turkey, canned soups, condensed milk, canned pickles, vinegar, salt, pepper, canned mushrooms, macaroni, vermicelli, laundry soap, toilet soap, sapolio, starch and blue, insect powder, candles, safety matches, stationery, rope and twine, smoking pipes, tubs and washboards, chloride of lime, ammonia, alcohol and paints, shoe blacking, sewing machines.