SUCCESS IN POULTRY CULTURE 
it in about the same place during the 
whole period of incubation. 
Be sure that your thermometer is a 
good one; don’t let a few cents’ difference 
between the price of a good thermometer 
and a poor one ruin your eggs. You will 
have to open the door and pull out the 
tray to read a thermometer in this posi- 
tion; but this will do no harm with this 
machine. 
I want you to read all that I have to 
say about thermometers on pages 45-49. 
-On the eighteenth day of incubation 
fasten the thermometer to a block of 
wood heavy enough so that the chicks can 
not turn it over. Be sure that the bulb is 
the same height that it has been during 
the hatch. The eggs that you have tested 
out will give room for such a block. Fas- 
ten the thermometer to the block in such 
a way that the stem will slant up a little, 
and so that there will be a clear air space 
all around the bulb. 
Brooder Plans and Specifications 
Fig. 8 shows the brooder complete. It 
is made just the same as the incubator, 
except that you use a curtain instead of 
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