5. _Manufacturing Departments_, in which all parts (large and small) of the product are made from the rough stock──such as castings, forgings, bar stock, and the like, to the completed parts ready for assembling. 6. _Assembling and Erecting Departments_, in which individual parts may be assembled into groups of related parts, and these erected into complete machines. 7. A _Power Plant_, containing the proper equipment for furnishing the necessary power for driving the machinery in these various departments, and for providing lighting and heating facilities for the plant. [Illustration: Fig. 1. Typical Layout of a Manufacturing Plant.] The _General Office_ of the concern is of course understood; but, as it cannot properly be classed with departments of the plant, it is not included in the above enumeration. In addition to the above list of principal departments, there will be the following──quite as necessary, but secondary in importance: 1. The _Transportation System_, including shop and yard tracks and cars, elevators, cranes, hoists, and all similar appliances for handling material. 2. The _Tool Room_, for making tools, jigs, and fixtures, and for properly storing them in a convenient manner for issuing when they are called for. 3. An _Experimental Room_, which all progressive concerns find necessary in the development of their product. 4. The _Store─Room_, in which are stored the raw material and the purchased stock, either partly or completely manufactured, which are issued to the different departments as needed for their daily routine work. 5. The _Finished Parts Store─Room_, in which the smaller parts of the product, as fast as they are completed, are stored and held until wanted for the process of assembling. 6. The _Pattern Storage Room_. In this department, often occupying several floors of a building specially constructed for this purpose, are stored all patterns for the iron and brass foundries, and also those sent to outside foundries for malleable and steel castings. 7. The _Carpenter Shop_. This is a general utility department making boxes and crates for shipping; doing carpenter work in keeping the grounds and buildings in proper repair, and making necessary changes therein; making and repairing flasks for the foundry; and similar work. 8. The _Paint Shop_. A small room serving little more than as a storeroom for paints and painters' materials, as their work is principally done at various points in the shops, wherever the machines or parts may happen to be. 9. The _Shipping Room_. In a plant building large machinery, the shipping room is simply an office for the shipper, the physical work of shipping being done in the shops, wherever the machine may happen to be at the time.