EGGS IN COLD STORAGE. 



37 



record. Another very bad arrangement of side wall 

 piping- came to the notice of the writer recently. A 

 room exceeding- fifty feet square was piped completely 

 around from floor to ceiling with the exception of the 

 doors. Circulation could penetrate but a compara- 

 tively small portion of the space in this room, and in 

 a large area of the central portion the air was conse- 

 quently very foul, and mold and must were rampant. 



Fig. 3 gives us the first primitive improvement A 

 over open coils, and it is along step in the right direc-pip in 

 tion, but it fails to take care of the center of the room, 



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f/j. 



especially near the ceiling. The usefulness of this 

 device consists in its ability to increase the velocity, 

 and consequently the volume of air passing over the 

 cooling coils. The increased velocity of air causes it 

 to cover a greater area, and spread toward the center 

 of room further. The apron or screen used before 

 the coils should be constructed of any moderately 

 good non-conductor. Separating the warm and cold 

 currents of air increases the draft, on the same prin- 

 ciple that a fire burning in a flue creates a greater 

 suction or a more rapid displacement of air than when 

 burning in the open. 



Fig. 4 is simply an addition to No. 3, of a false 

 ceiling or curtain extending well out toward the 



