The commission put forth 10,070 interrogatories relating to everything connected with the army, the persons and the _matériel_, to officers, surgeons, physicians, health-officers, soldiers, nurses, cooks, clothing, food, cooking, barracks, tents, huts, hospitals, duties, labors, exposures, and privations, and their effects on health and life, in every climate, wherever British troops are stationed or serve, at home and abroad. The same inquiry was extended to the armies of other nations, French, Turkish, Russian, etc. To these questions the witnesses returned answers, and statements of facts and opinions, all carefully prepared, and some of great length, and elaborate calculations in respect to the whole military and sanitary science and practice of the age. A large part of the inquiry was directed to the Crimean army, whose condition had been, and was then, a matter of the most intense interest. Many of the witnesses had, in various ways, been connected with that war: they were familiar with its history, and their answers revealed much that had not before been known. The result of all this investigation is published in a folio volume of 607 pages, filled with facts and principles, the lamentable history of the past, painful descriptions of the present, and wise suggestions for the future management of the army; and the whole is worthy of the careful attention of all who, as projectors, leaders, or followers, have anything to do with the active operations of war. The Crimean War has this remarkable interest, not that the suffering of the troops and their depreciation in effective power were greater than in many other wars, but that these happened in an age when the intelligence and philanthropy, and even the policy of the nation, demanded to know whether the vital depression and the loss of martial strength were as great as rumor reported, whether these were the necessary condition of war, and whether anything could be done to lessen them. By the investigations and reports of commissions, officers, and others, the internal history of this war is more completely revealed and better known than that of any other on record. It is placed on a hill, in the sight of all nations and governments, for their observation and warning, to be faithful to the laws of health in providing for, and in the use of, their armies, if they would obtain the most efficient service from them. WANT OF SANITARY PREPARATIONS FOR WAR.