442 FARM ANIMALS 
disease is to remove the cause. This sometimes is done 
very easily. Mange and lice are quickly destroyed by 
washes and disinfectants. Bright, fresh, wholesome food 
and pure water easily replace bad food and water, to the 
permanent good of the stock. 
| Cattle ticks quickly disappear 
a@ 4) when the grease brush is ap- 
| plied. A first aim in fighting 
disease is to find the cause and 
remove it. This done, half of 
the battle is fought. 
CaTTLE Ticks AT DIFFERENT 
STAGES OF DEVELOPMENT If disease germs cannot be killed 
at the moment, it is still possible to 
diminish their number or to modify 
their virulence. Thus, to open an abscess is to remove the pus-pro- 
ducing bacteria, and hence to hasten recovery. To wash a wound 
or open sore with antiseptics is the simplest way to remove, diminish 
and destroy the evil of the sore. 
6. Helping the body fight.—When disease sets in a 
battle begins. One combatant is the disease, the other 
is the body. Medical aid consists in caring for, in nurs- 
ing, and in making the body strong. Medicines are help- 
ful if they diminish the work of the diseased organs, giv- 
ing in this way time for the body cells to bring about a 
cure. Therefore, rest and quietness are advisable, that 
no organ may be called upon to do any other work than 
normal function and repair. 
ieee? 
A disease of the heart calls for absolute rest; of the intestines, 
for little or no irritating or bulky or hard food; of the lungs, for 
no exposure. At times it is advisable to check the activity of an 
organ, in which case a drug may be given, like opium, to quiet the 
intestines; or like aconite, to diminish the rate of the blood flow. 
In the same way external assistance may be rendered; as, for ex- 
ample, sweating, to throw off poison in the tissue juices; and blanket- 
ing, to maintain an even temperature and to protect from chill 
and draft. 
7. Giving medicines in a ball—Many nauseous agents, 
as aloes, opium, arsenic, asafetida, may be conveyed to 
