SUCCESS IN POULTRY CULTURE 
they should be. For this purpose a dark 
room is necessary. 
For a light an electric bulb or a coal-oil 
lamp can be used. The lamp can be placed 
in a suitable box, with a round hole cut in 
the side for the light to shine through. 
This hole should be about the size of an 
egg, and should be in the right place to 
come right before the blaze of the lamp. 
The box should be so arranged that no 
light will escape from it except through 
this hole. It should also be arranged so 
the lamp can get plenty of air, or it will 
get so hot that it will be dangerous. The 
eggs can be held before the beam of light 
coming from the hole in the box, and if 
they are fresh they will look clear and 
bright; if they are not fresh, they will 
have dark spots in them and some of them 
will look clouded. These spots and clouds 
will usually float about as the egg is 
turned. In white-shelled eggs the yolk of 
the fresh ones can be seen floating about 
as the egg is turned, and the novice is 
apt to think that a good, fresh egg is bad 
on this account; but by a little practice 
you will learn to distinguish, very readily, 
between the good and the bad. It might 
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