EGG PRESERVATION 213 
out of the solution they are sticky, and before packing should be 
washed and dried. 
It has been shown that the changes in eggs preserved in water- 
glass take place very gradually ; at one year old they are hardly 
noticeable, at two years they are distinct, but not so distinct as 
at three or four years old. Eggs which had been preserved for 
about six months tasted and smelt like well-kept eggs a few days 
old, but as the eggs in question were a few days old when placed 
in the water-glass, it did not seem that they were appreciably 
changed. At three or four years old the white became pink in 
colour and very liquid, but even at four years old the eggs had no 
unpleasant taste or smell, and the white coagulated in the usual 
manner in cooking. Practically no change was observed in the 
composition of the eggs, even after lengthened immersion. 
CoLp STORAGE 
The methods already described are equally suitable for large 
and small quantities, and may be adopted either by the farmer or 
by the trader. Cold storage, on the other hand, in order to be 
profitable, must be carried out upon a large scale, and is conse- 
quently not available for small producers unless they have a cold- 
storage plant for other purposes. In America this system is ex- 
tensively employed, and large plants have been specially erected 
for the business. Eggs require to be unpacked and laid upon 
shelves or in trays, and kept at an even temperature, not falling 
below 33° Fahrenheit, with a free circulation of absolutely sweet 
air. No other products should be kept in the same room, other- 
wise the eggs may be affected. By this method, provided that 
the eggs are new laid when placed in storage, they can be kept for 
many months in good condition, but great care is necessary in 
removing them for use, as a too sudden change of temperature 
causes rapid deterioration. In all cases they require to be used 
very speedily on removal from the cool chamber, and the evidence 
obtained in this and other countries shows that cold-storage eggs 
will keep for a much shorter period after they are taken out of the 
