ABCESS., IOI 
‘due to these mycosic processes. To-day we have recourse to a specific 
medication: the administration of iodide of potassium internally, by 
the use of tincture of iodine, applied externally by painting or by injec~ 
‘tions. (See Actynomycosis and Botryomycosis.) 
For the horse, iodine administered internally and injections of tinc- 
ture of iodine, pure or diluted (tincture, 4; iodide of potassium, 53 
water, 20), have seemed to us to be a good treatment for some purulent 
old phlegmasiz which do not belong to botryomycosis, 
II. 
ABSCESS. 
The great diversity of the clinical and anatomical characters presented 
‘by purulent collections admits of the following classification: warm or 
acute and cold or chronic abscesses ; superficial and deep abscesses + abscesses 
by congestion, forming in dependent regions ; general abscesses, develop- 
ing in the course of specific diseases (distemper, glanders); metastatic 
abscesses, appearing secondary to a suppurating lesion, as the result of a 
“metastasis” of the pus, and well characterizing pyohemia; crdtcal 
-abscesses, occurring in the course of some internal diseases and coincid- 
ing with an improvement in the general condition; sudden abscesses, 
‘which, in some animals exhausted by age, work, or previous diseases, 
‘appear suddenly, without noticeable local reaction ; urznary or stercorous 
.abscesses, which follow the infiltration of urine or of fcecal matter in the 
‘substance of the tissues. 
With the exception of some organs of obscure vitality (epidermis, hoof, 
‘teeth and cartilages), all tissues may become the seat of abscesses. 
‘These may therefore be seen almost in every part of the organism. 
‘They are frequent in some regions (maxillary space, poll, neck, withers, 
point of the shoulder and inferior part-of the legs), and again rare in 
‘others (abdominal walls, croup, gluteal region and thigh). Venous and 
lymphatic abscesses are a great deal more common than arterial. 
Muscles and bones are less affected with suppuration than the skin and 
‘connective tissue. Generally, it is in this last that absesses develop : it 
is this which offers the greatest facility for pyogenesis. 
Suppurative inflammation may be the result of the effect of numerous 
‘causes, but it is generally due to traumatic action, Some abscsses, 
‘consequent upon the extension of the inflammation, occur in the 
neighborhood of the primitive lesion, or at some distance from it, in the 
lymphatic vessels or their collecting glands. Our publications contain 
a large number of curious observations about superficial abscesses, due 
to foreign bodies which have travelled a distance more or less great, 
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