172 DISEASES OF THE HOG. 
remain so, causing stiffness of the joints. In the 
muscular form, as well as in the articular, the 
disease may extend to several muscles or may be 
limited to one. It very frequently involves several 
in the same neighborhood and concerned in the 
same action. There may or may not be inflamma- 
tion, or only an irritation causing soreness and 
stiffness with little or no swelling. If inflamma- 
tion is present there will be pain, swelling and red- 
ness, causing high fever. This variety of rheuma- 
tism is not confined to the muscles and joints, but 
may affect any tissue of the body. There is reason 
to believe that it sometimes attacks the nervous 
sheaths, producing severe pain along their course 
or may extend to the nerves themselves, producing 
spasms of the parts. There is no doubt but that 
many of the severe complicated nervous disorders, 
both of external and internal parts, connected with 
tenderness of the spinal column and the marrow, 
causing paralysis of the hind legs, are due to sub- 
acute rheumatism. In some forms of rheumatism 
there is a great tendency for it to shift from one 
joint to another or from one part of the body to 
another. This form is less likely to cause bad re- 
sults, as it is only an irritation and not inflamma- 
tory. Rheumatism is liable to attack any organ 
of the body, such as the heart, lungs, pleura, dia- 
phragm, abdomen, stomach, liver, kidneys, bowels, 
ete. Rheumatism in the acute or subacute form is 
not a fatal disease unless it affects some of the in- 
ternal organs, especially the heart, but it is apt to 
leave complications, especially is this the case 
