ON CARPITIS. 
603 
verse of this holds with regard to spavin ; for horses that are too 
lame from the latter disease to be pleasant in harness, are so in 
moderate use in saddle ; but in either case the same amount of re- 
lief to the affected part cannot, by the changing from one kind of 
labour to another, be given to the diseases of the hind as to the 
fore limb. 
In the foregoing observations I have endeavoured to point out 
the characteristic difference between “ carpitis” and “ naviculitis,” 
when both legs are similarly affected, and have also only consi- 
dered one of the terms of the old farriers. There is another which 
they applied to lameness of the fore limbs — “ shoulder shook,” or 
“ shook in the shoulders this, I think, ought more properly to 
be considered as referrible to “ naviculitis,” and synonymous with 
“ groggy.” I am disposed to believe, from a careful perusal of 
many of the old writers, that this is the meaning they themselves 
intended by the use of the two terms ; and though, in many in- 
stances, they may be used synonymously, this must not be won- 
dered at, when the true seat of either disease was unknown ; 
and if “ chest-founder” be an accurate description of the sensation 
conveyed by the gait in “ carpitis,” “ shoulder shook” is nearly 
equally expressive of the gait in “ naviculitis.” 
The differences between “ carpitis” and “ shoulder lameness” I 
shall point out when I come to speak of the disease as existing in 
one leg only, the previous remarks being more particularly to 
draw attention to a lameness, the seat of which has been con- 
founded with another, perhaps more frequently occurring, but not 
a more important disease. 
Before entering upon the consideration of the morbid condition 
of the joint, and the treatment best suited for the mitigation or 
removal of the disease, I give in a condensed form the following 
cases, occurring between the years 1834 and 1837, as illustrative 
of the disease under different circumstances, as also from their re- 
maining under my observation a considerable period after their 
dismissal from treatment. 
A bay pony, aged ; bought very lame of the off fore limb, a 
slight abrasion of the knees, evidently from having recently fallen 
down : nothing of previous history known. Considering it to be a 
case of “ carpitis,” I at once proceeded to treatment, by firing the 
inside of both knee joints, and applying a mild blister imme- 
diately afterwards. The pony was tied up till the third day, 
when, upon being turned out loose, he trotted sound. At the end 
of three weeks I rode him fourteen miles, and continued to ride 
and drive him for about a year and a half, during which time he 
was perfectly sound, wilh the exception of about a week, when 
he became lame from slipping on some beaten snow. A week’s 
