When the cause of lameness is not strikingly apparent it becomes
necessary to have the subject moved farther than a few steps and at
different paces. Depending then, upon the character of lameness
manifested, as well as upon its degree of intensity, one needs to
exercise the subject in various ways, but this should not be overdone.

The first thing apparent in the lame subject in action, is the lame leg.
If this is not readily determinable, as in some complicated cases, the
leg or legs which are at fault are to be discovered by further
examination, and to do this,--word-pictures convey little that is
helpful in difficult cases,--long practice is the one route by which one
may become efficient; that is, by experience gained after fundamental
principles in the diagnosis of lameness have been mastered.

For a careful study of supporting-leg-lameness involving a fore limb,
the subject is driven or led _toward_ the one making such examination.
If a hind leg is to be observed, the animal is made to travel _away
from_ the examiner. Where there exists swinging-leg-lameness, the
subject should be caused to move past the diagnostician, so that he may
get a side view of the subject while it is in motion.

In every case such examinations are made to the best advantage if the
practitioner can view his patient from a little distance. Here, again, a
visual examination is made but this cannot be successfully executed, in
difficult cases, if the practitioner is stationed at too close range.

The average subject is best observed by being led, rather than being
ridden, and in so doing the animal should be given moderately free
rein. A close grasp on the lead may interfere somewhat with head