COLORING SATSUMA ORANGES IN ALABAMA, 15 
as to make the bearings not over 5 feet apart. The girders should be 
supported on 8 by 8 inch concrete piers placed 5 feet apart. 
_ The ventilators should be equipped with tight-fitting doors which 
_ean be operated with rope pulls from the inside. 
The entrance to each room should have two tight-fitting doors 
‘with an air space between. If the coloring house is built adjacent to 
a packing house, similar doors for each room should be provided 
} between the two buildings. Every precaution should be taken to 
make the building as nearly air-tight as possible. Special atten- 
tion should be directed to the securing of tight unions about the sill 
ind plate. 
. | EQUIPMENT OF A COLORING PLANT. 
| Where a coloring house having two or three rooms is to be 
erated, the coloring can usually be successfully carried on by 
Fic. 2.—Satsuma orange coloring house built in conjunction with a packing house. 
using the exhaust gas from the gasoline engine in case one is used 
to furnish power for the sizer in the packing house. If a larger 
house is to be operated or if a gasoline engine is not used for power 
in the packing house, it is advisable to use the kerosene-stove equip- 
ment, which will be described. 
EQUIPMENT FOR COLORING WITH ENGINE EXHAUST. 
_ The gasoline engine ordinarily used in the Alabama packing 
_ house, described in this bulletin, is of 6 to 10 horsepower with an 
» exhaust outlet of from 1} to 2 inches in diameter. The exhaust can 
be piped directly to the basement of each room by using suitable 
_ fittings, without lowering the efficiency of the engine too much. 
The piping and fittings required are described as follows: Close 
to the engine a union should first be used so that the engine can 
readily be disconnected for making repairs, etc. Then, conveniently 
close to the engine, is located a T if two rooms are to be served or a 
cross in case of three rooms. At each of the two or three outlets thus 
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