The ventilation is acquired by the use of V-shaped window drops, placed just under the plate, full detailed drawing of which is given in the back of this Book. The bottom of the windows, on the south front of the building, are three feet above the floors, and these windows are forty-four inches in length and thirty-six inches in width. They are hung at the top, and are opened and closed by the same sort of device used in churches for the “Cathedral” window. The holes in the fastening irons are about two inches apart, allowing the window to be firmly held open to any degree desired. There is a slide board at the back of the hover, which is easily raised, materially assisting in the quick and perfect cleansing of the hover floor. Hanging above this, and using the slide board as a sill, is a gate which extends to the height of the wire division, and swings out, giving the attendant ready access to the hover, drinking cups, etc. The whole Brooder House is heated by hot water coils, extending along the entire length of the north wall of the building. These are of two inch pipe, and in the sixteen feet part of the building there are six, while in the twenty-two foot extension there are eight pipes. As stated, the Brooder House is built over the Incubator and Sprouted Oats Cellars. The Sprouted Oats Cellar is entirely of concrete, and the floor slopes to one point, where drains carry off the water, allowing the frames to slowly drain themselves, and preventing the oats from rotting from an over supply of moisture. Access is given to the Incubator Cellar by a vestibule in which are located broad stairways, enabling one to go from the Cellar to the Brooder House without going outdoors. The heater room occupies the first 30 feet of this Cellar, and is divided from the incubator room proper by an eight inch concrete wall. In this heater room is the large hot water boiler which heats the Brooder House, above. There are also two automatic heaters, controlling the trunk line pipes for the heating of the air passing up under the hovers in the Brooder House. The incubator heaters also stand in this room, the pipes passing through the division wall, connecting with the incubators on the other side. The floor is smooth surface concrete, there being a gentle slope in the heater room all to one corner, where a drain carries off the water used in flushing the floor. This same arrangement exists also in the Incubator Cellar proper, allowing the hose to be used in flooding the floor twice a day to give the proper amount of moisture for incubation.