144 REMARKS ON MR. REEVE’S EXPERIMENTS. 
Result . — On the most careful search, not a single point had pe- 
netrated the sole. 
9th Experiment . — The same horse. The near fore foot, the 
lateral harrow-shoe, No. 5, used. 
Results . — The two last upper screws seemed to have made a 
slight up-and-down scratch, most insignificant in depth, not one- 
fortieth of an inch. On examining into this closely, I could find 
that the shoe lightly sprung, from not being nailed on the outside, 
and that those up-and-down marks corresponded with the points of 
the screws, as I moved the shoe up and down from the heel slightly 
by the hand. The depth of the scratch was not the one-fortieth 
of an inch. 
\9th Experiment . — The same mare ; used as in the 1st Experi- 
ment. Off fore foot : being dissatisfied with the result of first 
Experiment, at least wishing to try and find the cause of it, I had 
it over again, and once more found the same results ; but having 
got a wrinkle from my last trial, I again examined these scratches, 
and found they were produced from the shoe not fitting close to 
the heel, and therefore that, when the foot came to the ground, 
the point of the screw came against a wide part of the hoof, and, 
of course, scratched it; and also, that the declination of the foot 
caused the greater mark by the last screw. 
1 1 th Experiment . — A very fine heavy chestnut cart-horse, with 
good feet, but rather flat, and plenty of horn. The lateral harrow- 
shoe, No. 5, used. 
Result , — There was not the slightest mark from any screw. 
I must observe that, in this case, carefully considering former 
experiments, the greatest care was taken in getting a perfectly 
level seating, and nailing the shoe very firmly on around the in- 
side and at the toe ; and before the horse was trotted, & c. I found 
the shoe was very firm at the quarter where there were no nails. I 
will also remark that, after the experiment, I noticed that the 
cartilages of that foot were ossified, although not to a very great 
extent. How far the latter affected the result, I cannot say ; I 
give it as I found it. 
Having now gone through these Experiments, I do not wish to 
say more ; I trust many will put them to trial. I will once again 
warn the experimentalist of the extreme nicety that is required, 
and that the slightest inattention on his part will infallibly inter- 
fere with the truth of the result. Before experimenting, he had 
better carefully read over this paper, which will warn him of the 
many errors he might fall into ; and he may depend upon it, that 
the remarks are practical, and have only been arrived at by the 
closest investigation. As to the different results shewn by Mr. 
