The sun. [volume] (New York [N.Y.]) 1833-1916, 1914-03-08

this temperature during the entire period
OF incubation. The writer prefers to Sc
cure an average OF 1903 degrees, running
the machine at l0ah degrees the nrst
week. los the second week and 100 \, the
third week
OF course the lamp should burn stead
lily. as this has a decided bearing upon
the matter OF temperature. Use nothing
but high grade oil. which gives a steady
name. Oil which burns poorly 10 the cause
OF crusted wicks and deposits OF SCOT In
the heater. Use . new wick for each
catch.
FIJI and trim the lamp late in the after.
noon. This insures q fresh name and an
ample supply OF oil for the many hours
during which the machine Is not under
observation.
Ventilation 10 necessary In order that
the developing embryos may receive the
required oxygen and the dangerous car
bon d!oxsie be driven from the egg cham
Der. Ventilation and moisture are closely
associated. II the former 10 right. the
latter will usually be also.
In the process OF incubation the ceg
naturally loses considerable moisture
through evaporation. II exposed 10 q
eggs lose % much moisture that they
hatch poorly. IT, on the other hand. the
air current is too sluggish. the embryos
fail to receive the required amount OF
oxygen and this also causes poor matches.
At present we DO not know Of any def
mite method whereby one can accurately
determine whether me ventilation 10 Alb
solu,ely correct. However. certain expert
ments In Weighing egGv have brought out
some interesting facts which the alert
poultryman can use to ADVANTAGE. II has
oeen found that the best results are Sc
kept At incubating temperature lose
weigh, at the rate Of ten ounces every six
days.
Using this as a basis one may regulate
the ventilation. II the loss In weight IL
roo rapid check the ventilation II too
slow Increase the ventilation. THIS re-
au.res some detail work and attention
but Il usually paws 20 spend tho time
necessary to get things right.
The eggs should be placed In the ma
chine In the morning, This gives ample
time for them 10 get heated up ana the
incubator nicely adjusted
After forty-eigh' hours the eggs snou,o
he turned twice each day until they begin
20 pip. Usually the last turning Will
he on the nineteenth day me oeS
method OF turning Is shutting. the eggs
being rolled around In the tray, those
| from the centre brought TO 'he oul'r
edge, This not only changes the position
| ~ each esSx, bur helps to epualize the
| ,emnera,ure In machines where the CEN
ira Of the tray IL warmer than its euses
In properly ventilated incubators II 10
not necessary TO leave the eggs outs,ue
| OF the machine for cooling II. however
the movement Of air within the egg cnam-
hsr a. siureish. as often happens during
snells of extremely hot weather. II 10 nee
essary TO leave the egg trays out In the
| room for q considerable time each day
IN order to give the embryos more AR,
Also II the temperature rises too high the
trays should BE- taken out and the eggs
slightly cooled. ... -,
81. ann day. brown shelled on the
..v.nth Infertiie eggs will appear per-
| ,.c,,y clear, and these are suitable TOT
| ,ooLir. purposes The live germs In FER
,,,s eoe, look much like red spiders Dead
germs are mere dark spots. frequently en-
circled by q red ring None out the ess'
containing live germs should De et n'
| ,hs machine The testing process may DC
,sn.sted on the fifteenth and seventeenth
aav In order that the eggs containire
| -srn. which have died since the hrst test
may be thrown out
a, Matching time the temperature nat
ura,iy rises somewhat II may sately
ne permitted to go TO iob degrees, pu,
not higher Leave the machine cloee"
won, the time the FIRST chick appears unti'
-. Match n completed. Hang thick
c,o,, over the glass In the incubator door
90 the chicks will remain quiet sue'
hatching. .s.u ~,
80 .rd Of the twenty-hrst day. II ths
hatch draes beyond that time one ma.
onnciude that the eggs have been chilled
have been cooled too much or tnat tn'
temperature has been too low rru'.,
.sarr,ometer, are sometimes the cause OF
the latter condition.
rhs beginner will Do we'll TO keep &C
curste records OF all ehe factors bearin,
ou ...h hatch. a careful study o.
w.. comparinx one with another vii
| n,,sn enable one to locate the source o
troub,c when results are unsatisfactory,
ICopyrtoht, 1914 BY the george a. "o
Devttt COS