46 LANCASHIRE VETERINARY MEDICAL ASSOCIATION. 
treatment is a poultice at first, and then dust a little gum acacia, pow¬ 
dered fine and mixed with ordinary fiour. Carbonate of lead is used. 
We have a diseased state of the skin seen at the posterior part 
of the knee, termed mallender ; and when in front of the bend of the 
hock, sallender. Neither lame or do much harm, but sometimes, 
when neglected, they degenerate into foul, ichorous, discharging 
sores, a little more than troublesome and always unsightly. Treat¬ 
ment of these should be cleanliness, and the application of subacetate 
of lead and Ung. Hydrargyri. I will now speak of— 
TVarts, or Fe7'ruca. 
A wart is a state of hypertrophy of the papillae of the derma, with 
an increased production of epidermis. We find that young animals 
are more frequently the subject of this affection than old ones. 
They assume difierent forms on different parts of the body. We 
generally find them round when situated near the eyelids, broad 
and scaly underneath the abdomen, and pointed on the teats of the 
cow. A wart cannot be propagated. There is no doubt that 
they suddenly disappear, both in man and animals. The en¬ 
cysted ones are the most difficult to contend with, and are most 
frequently seen in the horse and young cattle. They are imbedded 
in the subcutaneous areolar tissue, principally on the inside of the 
thighs, along the abdomen, and about the prepuce. The best and 
only treatment I can recommend is the free use of the knife, or the 
application of an ointment composed of sulphur and sulphuric acid. 
Pedunculated warts may be got rid of by ligature. There is a disease 
somewhat akin to warts met with in our patients, viz.— 
Ecthyosis, or Crown Scab. 
In this disease we have the production of horny matter on the 
skin, giving it the appearance of the fish-scales. It is seen in 
the heels and on the coronets. We find the scabs to be horny 
spines, being an altered form of epidermis; the colour is influenced 
by the colour of the skin. It arises from hypertrophy of the papil- 
lated surface of the derma. In man it is hereditary, but I have 
no proof of such being the fact in the lower animals. These horny 
spines are frequently thrown off, leaving a roughened surface 
underneath. It is more frequently seen in coarse-bred animals. 
There is no one affection, the cure of which puzzles the veterinary sur¬ 
geon more than this, according to Professor Simonds ; but, for my 
own part, I cannot speak positively, not having had much experience 
in this particular malady. He says the foundation of cure lies in re¬ 
moving the horny spines, not forcibly, but gradually softening them 
by a mixture of sulphuret of potassium ^iss and Sapo Mollis lib. 
Apply the mixture and allow it to remain on two days, and then 
M^ash well; when the scales are removed use croton oil 5j to olive 
oil 3 j. The origin is difficult to discover, but the disease is thought to 
arise from dirt and neglect. There is a form of skin disease called— 
Pruritus, 
Best seen in the general form in the dog amongst our patients. It 
