ectric-light wires, etc. The wounds,
burns, or blisters should be treated according to the antiseptic method of
treating wounds.

TUMORS IN THE BRAIN, ETC.

Tumors of different kinds have been found within the cranial cavity, and in
many cases there have been no well-marked symptoms exhibited during the
life of the animal to lead one to suspect their existence. Cases are
recorded where bony tumors have been found in the brain of cattle that died
suddenly, but during life no signs of disease were manifested. Post-mortem
examinations have disclosed tubercles in the membranes of the brain. (See
"Tuberculosis," p. 407.) Abscesses, usually the result of inflammation of
the brain, have been found post-mortem. For the description of
hydrocephalus, or dropsy of the brain, of calves the reader is referred to
the section on parturition. (See "Water in the head," p. 179.)

Chorea, constant twitching and irregular spasmodic movements of the
muscles, has been noticed in connection with or as a sequel to other
affections, as, for example, parturient apoplexy.

Various diseases, the description of which will be found in other sections
of this work, affect the nervous system to a greater or less extent--for
example, ergotism, lead poisoning, uremia, parturient apoplexy, colic, and
other affections associated with cramps, or spasms, etc. Disease of the
ovaries or of the spinal cord, by reflex irritation, may cause estromania
(see "Excess of venereal desire," p. 148, constant desire for the bull).

DISEASES OF THE URINARY ORGANS.

By JAMES LAW, F. R. C. V. S.,

_Formerly Professor of Veterinary Science, etc., in Cornell University._

Of the materials that have served their purpose in building up the animal
body or in sustaining the body temperature, and that are now to be thrown
out as waste, the greater part is expelled from the system through the
lungs and the kidneys, but the agents that pass out by either of these two
channels differ in the main from those passing by the other. Thus from the
lungs in the form of dioxid of carbon--the same gas that comes from burning
of coal or oil--there escapes most of the waste material resulting from the
destruction in the system of fats, sugars, starch, and such other foods as
are wanting in the element nitrogen, and do not form fibrous tissues, but
go mainly to support animal heat or maintain functional activity. From the
kidneys, on the other hand, are thrown out the waste prod