BIOLOGICAL AND DAIRY BUILDING. 



403 



For securing constant temperatures in the cheese-curing rooms and 

 bacteriological culture rooms, and low temperature in the dairy and cold- 

 storage rooms, a supply of cold air is necessary. This is furnished by 

 an extensive refrigerating plant, operating on the ammonia-expansion 

 principle, located in the basement. Expansion coils connected with 

 the apparatus are provided in a cheese room in the basement, the 

 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 ;»t 



Fig. 12. — First floor plan of Biological and Dairy Building, New York State Experiment Station. 



night without running the machinery. The power for the compressor 

 and other machinery is furnished by a 25-horsepower horizontal engine. 



The building is well supplied with wash basins, sinks, and closets, 

 the most modern and thoroughly sanitary plumbing and drainage being 

 used throughout. 



In the basement (fig. 11) are the machinery and boiler rooms, several 

 large coal and storage rooms, and one large room for curing Brie, 

 cream, and similar cheeses which require moisture and darkness. 

 This room is provided with cooling apparatus. 



