ish the disinfecting
power of the bichlorid. Disinfection with this material should be
supervised by a veterinarian or other person trained in the handling of
poisonous drugs and chemicals, as the bichlorid is a powerful, corrosive
poison. The mangers and the feed boxes, after drying, following spraying
with this material, should be washed out with hot water, as cattle are
especially susceptible to mercurial poisoning. The bichlorid solution
should be applied by means of a spray pump, as recommended for the
liquor cresolis compositus.

VACCINATION.

In recent years vaccination for the prevention of certain infectious
diseases has been successfully developed, and without a doubt the future
has a great deal in store for this phase of prevention. At the present
time vaccination has been found effective against blackleg, hog cholera,
anthrax, lockjaw, strangles, rabies, hemorrhagic septicemia, white
scours, etc. It is always essential, of course, that the products used
for the vaccination be pure and potent; also they should be employed
only with the advice of competent authorities and with proper care. The
biological products prepared for the cure and prevention of infections
are prepared by manufacturers who, in order to conduct an interstate
business, are required to obtain a license from the United States
Department of Agriculture for the manufacture of such preparations.

Since July 1, 1913, the Department of Agriculture, by an act of Congress
of March 4, 1913, has had control of the manufacture of biological
products for the treatment of domestic animals. The numerous complaints
which were received from time to time relative to the impotency of some
of the preparations, and also the fact that in some instances the use of
the products were directly responsible in causing outbreaks of disease,
made the necessity for such control obvious. This supervision is no
doubt of far-reaching importance, as it assures the users that the
preparations are reliable.

INFLUENZA.

_Synonyms._--Pinkeye, typhoid fever, epizooty, epihippic fever,
hepatic fever, bilious fever, etc.; flevre typhoide, grippe
(French); Pferdestaupe (German); gastro-enteritis of Vatel and
d'Arboval; febris erysipelatodes, Zundel; typhus of Delafond.

_Definition._--The term influenza is applied to a febrile, contagious,
infectious disease of horses, which is characterized by a blood
infection, with inflammation of the mucous memb