MAL CHUNG PEE (CHICKS 67 
to become better acquainted with the simple mech- 
anism. It should be regulated so that the ther- 
mometer will show exactly 103. And it is an 
excellent plan, by the way, to have the thermometer 
tested by a physician or druggist, for it is not un- 
usual to find one which is not just true and if the 
amount of variation is known, it can easily be al- 
lowed for. Strangely enough, the fault, if any ex- 
ists, is generally found at the point between 100 
and 103 degrees. Faulty thermometers cause fre- 
quent losses. 
The kerosene oil should be of the best quality that 
can be obtained. Whether to fill the lamps at night 
or in the morning is an open question. If filled 
in the evening one is sure that a strong heat will 
be carried through the night, but if filled in the morn- 
ing, it is easier to check any tendency of the flame 
to run up. A new wick should be used at the be- 
ginning of each hatch and the lamps should always 
be kept perfectly clean, with the wicks trimmed 
daily. Too careful attention cannot be given. 
After the second day, the eggs should be turned 
night and morning. This does not mean that they 
must be directly reversed, but that they should be 
shifted about in order to ensure an even distribution 
