“ CLUB ” OR “ STUMP FOOT.” Ill 
patches of the fungus, which is not unlike the two last- 
described species. 
When it occurs in quantity, we may be pretty certain that 
the root is not going to make any further progress of im- 
portance. Hence, then, on the advent of the beet rust, we 
usually begin at once to pull the crop, as we then find that 
its keeping qualities are unimpaired, but if left long after the 
attack, we have no doubt but that the roots most grievously 
suffer. 
In conclusion, it may be stated that nearly all our crop 
plants are liable to be affected by some species or another of 
Uredo. Hence, some years ago, we detected an Uredo in 
the cellular tissues of diseased potatoes, which, growing on 
the walls of the cells, destroyed them, and lessened the 
deposit of starch at the same time. 
So universal, indeed, are these epiphytical plants, and so 
varied is their history and modes of attack, that it is diffi- 
cult to say whether they are the cause or the effect of 
maladies and injuries to the crop by which they are accom- 
panied, and hence, for the farmer, they should possess a 
paramount interest ; whilst such are the effects of some of 
these on the food and constitutions of the animals which 
partake of the plants, that the physiologist of every school 
should more carefully attend to them. 
“CLUB” OR “STUMP FOOT,” AND THE SPRING 
EXTENSION SHOE. 
By Isaac Seaman, M.R.C.V.S., S. Walden. 
During eighteen years' residence in this town not a year 
has passed without producing within the area of my practice 
some half dozen crippled colts, from club or stump foot, for 
such is the local name of the disease. 
The malformation occurs sometimes at birth, but more 
commonly at the age of two months to two years. The limb 
from the knee downwards is first noticed getting steep, the 
action becomes stilty, the toe gradually receding, and the 
heels are raised. As time goes on, the toe continues to recede, 
and the heels are lifted higher, the front of the coronet has 
an appearance of ringbone, and the colt walks on tiptoe. 
At the end of two months the tendons and ligaments at 
the posterior part of the limb become shortened, drawing the 
