1, the temperature curve of a healthy animal after injection with
tuberculin; 2 and 3, the temperature curves of tuberculous animals
after injection with tuberculin. (After Moore.)]

Anthrax, actinomycosis (lumpy jaw), rabies, and malta fever are
diseases the organisms of which have been found in the milk of
affected animals. In case of the first three, while the possibility
exists of the infection of human beings by milk, it is improbable
that such infection does normally occur. Malta fever is becoming an
important disease in portions of southern Europe. It is produced in
man by the use of milk of goats suffering from the disease.

The organism causing contagious abortion in cattle is known to be
present in the milk of the infected animal at the time of its
withdrawal from the udder. It is not probable that the organism is
of any sanitary significance as far as man is concerned. It has been
shown that the organism is able to produce a disease in guinea pigs
on artificial inoculation that is very similar, so far as the
lesions are concerned, to tuberculosis. It is also probable that the
by-products of creameries and cheese factories may serve to spread
the disease from one herd to another.

Inflammation of the udder (garget) is a frequent trouble in every
herd. It is marked by the swelling of one or more quarters, by the
appearance of fever and changes in the appearance and composition of
the milk. The inflammation may be caused by cold or injury, or by
the invasion of the udder with pus-forming bacteria. In the first
case the trouble is not likely to persist for any length of time,
and does not spread to other members of the herd. The milk may be
more or less stringy, and may show a slimy flocculent sediment. It
cannot be asserted that such milk is harmful to man but it should be
rejected on general sanitary grounds, and because it cannot always
be differentiated from that coming from an udder in which the
inflammation is produced by bacteria.

Inflammation caused by the invasion of the udder with specific
bacteria is usually of greater severity, the entire gland often
becoming involved. The secretion of milk may cease and the function
of the diseased quarters may never be restored. The milk in the less
severe cases may not be abnormal in appearance, but with increasing
severity, the nature of the milk changes, until it may be a watery
liquid. The milk of any animal suffering from any form of garget
should be re