722 
PATHOLOGY OF GLAxNDERS. 
which we observe in the glandered horse. The tubercles 
rapidly increase, becoming abscesses, and discharge purulent 
matter. The parts most liable to the deposit of this strumous 
globule are the lungs, liver, spleen, lymphatic glands and 
vessels, the lining membranes of the nostrils and joints, the 
membranes of the brain and skin of the heels. The cha¬ 
racter and progress of this tubercular deposit is very re¬ 
markable. It resists absorption, and continues to grow 
where there is not any inflammation whatever to be found. 
It is well known to those who have examined the lungs of 
horses destroyed by, or in consequence of accidents, that the 
small miliary tubercle is frequently present in the lungs of 
the most healthy-looking animals, without the slightest 
evidence of past or present inflammation. The whole 
history of tubercular disease in the horse confirms the fact 
that constitutional peculiarity is sufficient, under certain 
circumstances, to cause a deposit of tubercles independent 
of inflammatory disease, although congestion and inflamma¬ 
tion favour their growth. But that they can, and do progress 
without the aid of any such condition is beyond doubt. 
I have met with horses in country places looking well and 
working, at the same time having a considerable portion of 
the cartilage of the nose removed by phagedenic ulceration, 
similar to lupus, that eats away the nose of the human 
subject. I have also met with cases where the synovial 
membrane and cartilages of the shoulder-joints were affected, 
being surrounded by matter of a grey colour and pulpy 
consistence, contained in sinuses, not unlike the disease 
called white swelling of the human subject. 
Phagedenic ulceration of the skin of the heels, charac¬ 
terised by its slow progress, resistance of remedies continuing 
without much pain, heat, or swelling, but with discharge and 
deposit, healing and appearing again, is also a form of 
tubercular disease. Hydrocephalus and rachitis I have ob¬ 
served in foals the offspring of glandered mares. Tabes me- 
senterica and lumbar abscess, arise from the same diathesis. 
Feeding on linseed, bran, and other improper articles, 
deprives the stomach of the power of digesting sound food, 
by impeding its functions and perverting assimilation ; 
consequently the blood becomes encumbered with impurities, 
such as lithic acid, and other morbid particles. A slight cold 
is sufficient to excite active disturbance, when organic deposi¬ 
tions, epidemics, rheumatism, and a legion of diseases follow. 
Fatness, under ordinaiy circumstances, must be viewed as 
destructive disease ; the fact of fat being deposited in irre¬ 
gular places, such as the heart and liver, leaves no doubt on 
