254 
SCARLATINA ANGINOSA. 
and considering the physiology of the parts, I should reply, 
that the appearances observed in the interior of the joint were 
the result of injury externally , consequent upon the disease 
of the bones. I would argue thus, although briefly: the 
articular surfaces of the cushion and other bones are so 
constructed as to ward off concussion by means of the 
various constituents of the joints, cartilage, synovial mem¬ 
brane, &c. So that if’ the proper movements of these parts 
are interfered with, tied or bound down by ossific matter, as 
we find in this anchylosed joint, the different bones forming 
these joints, cannot be said to have the power of making use 
of the cushions in order to protect the parts from injury. 
My belief therefore is that, in this particular case, knowing 
as I do how long the joint had been in a state of anchylosis, 
the state of the interior or articular surfaces was the con¬ 
sequence of injury, from the bones having grown together. 
Moreover, I find the small metatarsal bone attached to the 
larger by means of ossific matter, instead of fibro-cartilage. 
All the movements of these bones seem to bear out the 
notion that the formation of bone was the primary cause of 
the disease of the interior of the joint. 
The above is but an imperfect description of a very im¬ 
portant disease. Enough, however, I have advanced to cause 
a certain amount of reflection, which is all I have aimed at, 
as time forbids my doing more at present. 
SCARLATINA ANGINOSA. 
By G. Fleming, V.S. Military Train, Curragh Camp. 
The subject of this communication, a robust troop-mare, 
of a black colour, aged five years, and lately purchased for 
the service of this corps, arrived in camp from Dublin, on 
the afternoon of the 31st of December last. 
During the three preceding days, whilst she was on the 
march, the weather was exceedingly boisterous and cold, and 
the billeting stables very bad and uncomfortable. 
On the morning of the 1st Januarv, she was admitted to 
the hospital stables on suspicion of being affected with mange, 
a disease of very frequent occurrence amongst our horses 
when on coming here. A careful inspection only revealed a 
few small spots of skin, about the sides of the face, denuded 
of hair, slightly scurfy and hot, but with no perceptible 
