New York AGRICULTURAL EXPERIMENT STATION. aM: 
crete floor being at grade in the rear, where doors into each wing, 
and into the main building from the court, give easy access. The 
elevators, one in front to the first story and one in the rear to 
both first and second stories, make the delivery of supplies and the 
handling of the dairy products very convenient. The basement 
and foundation walls are faced at all exposed points with Medina 
stone, giving a pleasing contrast with the lighter-colored_ brick. 
The roof is of slate, with galvanized iron cornices, and is so shaped 
that the attic rooms are large and high. Abundance of light is 
given these rooms through six double dormer windows at the sides, 
a round window in front and a skylight above. 
The interior is finished in quartered oak; hard plaster is used 
throughout; and the floors are southern pine except in the vaults 
and four dairy rooms, where vitrified tile is used. 
Heat, gas and water.—The building is heated by steam from 
two 30-horse power boilers in the basement, the radiators in each 
room being controlled by automatic valves connected with ther- 
mostats and operated by compressed air by the Johnson system. 
Steam from the boilers, compressed air and hot water from the 
compressor and heater (both also in the basement), and cold water 
and gas from the city systems are supplied at the laboratory tables 
and other convenient points. Constant pressure upon the water 
systems is maintained by connection with a 1,000 gallon tank in 
the attic. 
Refrigeration.— For maintaining constant temperatures in the 
cheese-curing rooms and bacteriological culture rooms and a low 
temperature in the dairy and cold-storage rooms a supply of cold 
air is necessary. To secure this an extensive refrigerating plant 
has been installed. This operates upon the ammonia-expansion 
principle and consists of a compressor, oil-removing cylinder and 
condenser located in the basement; and expansion coils in one 
cheese room in the basement, butter room, pasteurizing room, cold- 
storage room and large insulated rooms in the attic. Part of 
these coils are immersed in brine tanks so that.a low temperature, 
secured during the day, can be maintained during the night with- 
