Evening star. [volume] (Washington, D.C.) 1854-1972, 1929-09-29

amount of fore milking that is drawing off
the first small amount and discarding it be-
fore the cups are attached. This however, is
not necessary, experiments at the Beltsville
Farm indicate for the contamination is slight
and is OF nature which requires air and
higher temperatures than those at which milk
is kept for their development. No spore- form
ers, the type Of bacteria which resist pasteur-
ization and bring about serious contamination,
are found in the milk when drawn from a
healthy COW. These spore-formerS which have
an ability to maintain their spark of life within
Shel-like exterior, resist even the boiling
temperature for many minutes in some In
stances. They find access to. the milk from
dust. stable litter, and unclean utensils which
have been exposed to inSanitary conditions
The vacuum system eliminates them from the
dalrymanS worries.
After the teat cups have been adjusted. the
mixer turns on the vacuum which is supplied
from pump outside the milking room and
passes ON to the second and third pair of cows
in succession. The milk when drawn instead
of being gathered in the usual milking machine
receptacle IS carried into glass tank suspended
from a scale above and between each sunir
OF cows The rate Of milking IS thus alWays
shown to the operator. When the fow in
stopped, instead of the dificult stripping
the drawing Of the final amounts of milk and
the milk which Is by far the richest In butter
FATS. the operator simply messages the udder
and the machine does the rest.
WHEN the milking of a COW is completed. the
operator notes down the cows number
and the weight of the milk she yielded in or.
der that her efficiency as a milk producer NAV
DE Kept on record, and then turns a valve
which draws the milk from the glass tank
q mir
house. where much larger vacuum tank is To-
Gated: 1t requires about 20 to IS seconds for
this process and the operator Is then ready to
remove the cups from the first of each pair of
cows and adjust them on the second, repeating
the operation as before.
The cups are dipped in disinfectant after
each cow has been MIXED and any possible
contamination during the shift is thereby elm
inRted.
After the six COWS have been MIXED the ropes
extending TO the gates are drawn and the gates
rise. allowing the cows to pass out of the fronts
OF the stalls. From there they walk along a
passage way and out to the feeding barn. The
feeding barn may be little more than a shed ar
rangement on the floor of which straw litter has
been strewn AS the need arises the bedding is
ADDED to and the necessity Of cleaning this
stable at frequent intervals eliminated The
experimental farm workers have found that
several months may elapse before it is necessary
10 clean out, which is far less an expense than
the present system of cleaning the stables twice
daily.
Ihe pipe line which carries the milk FINN
the milking house to the milk room is not only
much cleaner than present methods, but is a
great time saver. The milk from one tank runs
OUT while the operator passes down the line
opening the valves on the other. Present meth
oas call Tor the mixer to carry each pail as
nlied 10 the milk room, where it must he
dumped into the 10-gallon cans sitting in the
cooling watts. The lids of these cans are kent
partially tilted to aid in the escape of the
animal heat and also to permit any odors in
the milk to rise off
Great care must be taken at this point to pro-
Continued on Fourteenth Pane