2. Give the causes and treatment of falling of the hair.

3. What is urticaria? Give the treatment.

4. What is summer rash? Give the treatment.

5. What is "scratches"? Give the treatment.

6. What feeds produce rashes of the skin?

7. What fungus produces an inflammation of the skin in cattle? Give the
treatment.




CHAPTER XII

DISEASES OF THE EYE


GENERAL DISCUSSION.--_The eye_ is situated in the orbital cavity, to which
it is attached by muscles that rotate it in different directions. The
_orbit_ is lined by fibro-fatty tissues that form a cushion for the eye.
Anteriorly it is protected by the _eyelids_, and in birds by a third eyelid
that corresponds to the membrana nictitans of quadrupeds. The _lachrymal
gland_ which secretes the tears keeps the above parts moist.

_The eye_ is the essential organ of vision. It is formed by a spherical