DENTITION DISEASES. 
415 
deposit of earthy salts, peroxide hydrogen or pyrozonc, if you are 
treating the dentine, or a sinus when the cause has been removed. 
Pericementitis .—This condition is one of inflammation of perio- 
dental membrane and the vascular net work; but as this has been 
fully described by Prof. C. E. Sayres in the American VETER¬ 
INARY Review, vol. 14, p. 144, we will only make mention of 
same here and add that we use aconite and arnica, but gangrene 
and abscesses aie tuibinated cases. I have frequently seen these 
conditions as a result of dentition and two cases I will illustrate. 
Several years ago I was called to examine some stock and 
among others a black draft, two year old colt, with one of those 
chai actei istic enlargements so often seen over the first, second or 
thiid molars during dentition. I looked upon it as of small con¬ 
sequence, that when tooth was cut it would probably disappear.. 
Several months later I was summoned again to diagnose the- 
ca.se. I could not. He was fast loosing all power of locomotion 
of hind quaiteis; symptoms somewhat that of motor ataxia very 
much moie severe, and in spite of all treatment he finally became 
completely paralyzed and was destroyed. 
Having seen one other case of abscess, I was suspicious of a 
like condition, notwithstanding the clinical symptoms were far 
different, etc. I paid $8.00 to have the head and spinal column 
bi ought to my office as I had no opportunity of holding a post¬ 
mortem on the premises. 
Post-mortem . Spinal cord normal, but when the head was 
sawed transverse to the enlargement mentioned on maxillary a 
large cyst of viscid fluid mingled with pus extending up against 
the ethmoid cribiform plate filling up the superior turbinated 
bones, and to my surprise so great was the pressure from the im¬ 
prisoned fluid that it did not burst the delicate structure of the 
turbinated. The cause here was the cutting of a molar and could 
no doubt have been treated successfully by trephining the frontal 
sinus and puncturing the delicate turbinated. When I discovered 
this I felt like giving the other $2.00 for a strong man to have 
kicked me all over my premises, but it was not convenient to get 
the right man, so I contented myself by acknowledging what a 
