185 
POSTSCRIPT FROM MR, REEVE. 
My last paper to The Veterinarian thoroughly explained 
my manner or demonstrating the expansion of the foot. The 
introduction of figures was only incidental, and by no means 
necessary to the argument, since the same could have been 
expressed algebraically, or by a reference to the 47th of the 
1st book. 
With regard to the question of the descent of the sole, I look 
upon my experiment with the “harrow” shoe as decisive; 
and, until it can be shewn that the concave sole can descend 
without expanding the crust, I contend that the question of the 
expansion of the foot must be considered to have been thereby 
demonstrated. 
If there be any so sceptical as still to doubt the result of that 
experiment, and to assert that the sole does not descend, put it 
at once to the test. Let a number of experienced gentlemen of 
the profession, consisting equally of advocates of the two oppo¬ 
site theories, be appointed to carryout, as stated in The VETE¬ 
RINARIAN for February 1850, my experiments, to the letter. 
If the descent of the sole be proved, the question will be for 
ever set at rest. On the contrary, should the experiment fail, I 
for one shall not be sorry to have my mind disabused of an 
error which was very reluctantly forced upon it; since it was in 
an endeavour to demonstrate the NON -descent of the sole , and to 
prove Colemans theory to he incorrect, that this important 
action of the foot was so unanswerably forced upon my con¬ 
viction. So satisfactory did the experiment seem at the time 
that it was never considered necessary to repeat it. 
W. Percivall, Esq. 
*** These supplementary observations have been elicited 
from Mr. Reeve by a private letter he has received through us 
from “ Amicus.” 
COWS POISONED BY LEAD. 
By C. Lancashire. 
On the 2d of August last, Mr. Tipper, of Kniveton, called 
on Mr. Cox, whose pupil I am, to consult him respecting a cow 
of his that had, two days previous, swallowed upwards of two 
pounds of white paint, which had carelessly been left in her 
way. We prescribed active purgative medicine with carmi- 
VOL. XXV. Gc 
