EAPC HING THE CHICKS 65 
hen will soon be settled again on a setting of eggs, 
although perhaps not in the nest which she left, for 
hens seem to have a very short memory; it is not 
uncommon for one to leave a nestful of hatchable 
eggs and sit on a China egg or two. The advan- 
tage of this method lies in the fact that the amount 
of work required is minimized, while hens are much 
more likely to be satisfied when changed from one 
nest to another in the same house than when moved 
to strange quarters. One can never be sure that 
a hen moved from one locality to another will con- 
tinue to sit. 
When a man runs an incubator, he puts all his 
eggs in one nest, as it were. Then he has one ma- 
chine instead of a number of hens to look after. 
Very little work is required, and that not of an 
arduous nature, but painstaking attention to details 
is imperative. Sitting hens will tolerate a certain 
amount of neglect because they are able to adjust 
themselves in some degree to circumstances. When 
using a machine, however, all the intelligence must 
be manifested by the operator. 
It is not wise to buy any but a standard ma- 
chine— such a machine as is generally used on 
large plants, which can afford to test the different 
