10 ' 
,T. SCOTT. 
often affected. When occurring in these regions the first 
symptom noticed will be a small swelling, scarcely ever in¬ 
volving the whole gland, but generally just involving its lower 
border. This swelling generally increases quite rapidly in 
bulk, and in some cases attains an immense size. 
One characteristic feature of these swellings is their 
peculiar density and hardness. Sometimes suppuration takes 
place in their centers, and if not opened up, will rupture 
spontaneously, and allow the contained pus to escape, but a 
true actinomycotic tumor or abcess whether it ruptures spon¬ 
taneously or is opened artificially will scarcely ever disappear 
entirely, and in this respect it differs from any other kind of a 
tumor or abcess containing pus that I have ever seen, for we 
all know that a simple non-malignant tumor or abscess when 
opened up so as to allow the contained pus to escape, will 
disappear, and the tissues composing and surrounding it will 
soon regain their normal condition, but in actinomycosis after 
the pus has escaped, and the opening healed, there still re¬ 
mains a hardened and enlarged cicatrix, with a base or root 
running from the cicatrix into the inner tissues, showing that 
the disease, though apparently cured, is only slumbering and 
waiting for a favorable opportunity to again break forth, or 
the fungus still remaining in the tissue may be taken up by 
the lymphatics, and conveyed to some other part of the animal’s 
body, there to become localized and form a new nucleus for 
the disease. 
I have now spoken of cases where the parotid gland was 
only partially involved but I have seen a number of cases 
where the whole gland was affected, the swelling in some 
cases being enormous, some of them being fully as large as a 
wooden bucket, the whole external surface of the swelling 
being raw, and penetrated by numerous fistulous openings, 
discharging a thick yellowish pus, the poor animals present¬ 
ing a most loathsome appearance. 
When occurring in the bones of the jaw, the first noticea¬ 
ble symptom will be a small circumscribed swelling, but the 
animal will evince no inconvenience from it unless the part is 
struck or pressed upon. The enlargement however increases 
in size, and the animal will begin to evince some pain. In some 
