Add to ORKGIt is the aim of this pamphlet to present in a broad and general way the basic principles of the depreciation problem as these principles concern ordinary manufacturing operations. Much has already been written on the subject of depreciation, but the greater part of this literature has been written from the viewpoint of the technical accountant and the engineer. An effort has been made to confine the following discussion to non-technical language and present the subject in a manner that will appeal to the executive, the superintendent and the foreman, as well as the cost accountant