Rheumatism thrives in cold, damp situations, and in wet, foggy weather.
It is often confined to the membranes of the large joints, and sometimes
consists in a deficiency of joint oil, (_synovia._) It is liable to
become chronic, and involve the fibro-muscular tissues. Acute rheumatism
is known by the pain and swelling in certain parts. Chronic rheumatism
is recognized by coldness, rigidity about the muscles, want of vital
action, &c.
When lameness, after a careful examination, cannot be accounted for, and
is found to go off after exercise, and return again, it is probably
rheumatism.
_Treatment of Acute Rheumatism._--Bathe the parts with an infusion of
arnica flowers, made thus:--
Arnica flowers, 4 ounces.
Boiling water, 3 quarts.
When sufficiently cool, it is fit for use.