BULLETIN 663, U. S. DEPARTMENT OF AGRICULTURE. 
plant, floor plans are offered, and the construction of egg-breaking 
and sterilizing rooms, as well as that of the various nieces of appa- 
ratus, is described in detail. 
CONSTRUCTION AND ARRANGEMENT OF ROOMS. 
An abundant supply of natural light is the first essential in suc- 
cessful egg breaking. Serious faults may be expected in a product 
prepared other than in full daylight. For this reason the actual egg 
breaking should be done, if possible, in a corner room, as opened 
eggs can not be graded accurately by artificial fight. The room 
where the utensils are washed and sterilized also should have nat- 
ural lighting. Well-lighted, up-to-date breaking and sterilizing 
rooms are shown in Plate I. 
I ig. 1.— Typical la^vout of breaking and sterilizing rooms. 
