226 ON DISEASES OF THE DENTAL APPARATUS 
cavities and the mouth ; then the pituitary membrane irritates, and 
secretes at one side only abundant mucosities with which the ali- 
mentary matters become mixed, and thereby giving to them a cha- 
racteristic green tint, but at the same time very different from the 
product of secretions furnished by glandered animals. Unless at 
a very careful examination, pathologists would find it difficult 
to confound the jetage determined by the caries of one of the first 
molars with the specific jetage of glanders. 
But the case is not the same in the complications induced in the 
nasal cavities by the caries of the back molars. There exists, in 
fact, such a close resemblance between the symptomatic expres- 
sions of the nose, consecutive to caries of the teeth, and those con- 
sequences of the disease called glanders in its chronic form, that 
nothing is more common or facile than error and confusion in these 
cases. It is, therefore, highly important to search out the differ- 
ential signs which exist between these affections, so essentially dif- 
ferent in their causes and effects, as well their nature and treat- 
ment. 
When caries of one of the last superior molars — say the fourth, 
fifth, or sixth — has determined the transformation of the membrane 
that lines the corresponding sinuses, polypous growths at its sur- 
face and the secretion of a quantity of pus in the cavities which it 
lines, a jetage is established at one side of the nose — that of the 
diseased teeth and sinuses. This jetage is white, lumpy, and very 
abundant, and its quantity augments in exercise. It gives off a 
foetid odour analogous to that of caries. 
The sublymphatic ganglions become engorged and hard, but 
remain indolent, and generally roll under the finger. The zygo- 
matic tables of the upper part of the superior maxillary bone, and 
also the nasal bone, swell at the region of the affected sinuses, and 
give a dull sound to percussion. 
At the first appearance of this group of symptoms, one would be 
tempted to admit the existence of glanders in the sinus ; but a more 
attentive examination will not allow us to be long satisfied with these 
conclusions : and first we shall doubt their correctness on exploring 
the nasal cavity at the side of the discharge, and where the lining 
membrane will be seen to be polished, smooth, and uniformly rosy, 
with its normal follicular openings ; when, on unfolding the supe- 
rior wing of the nostril, it is remarked that the salient border of 
the cartilage is perfectly neat and polished, without any little pim- 
ples or morbid tint. Now, we know that it is in those places, 
especially that in glanders, even of the sinus, which is often un- 
accompanied by chancres or other ulcerations, certain specific 
morbid signs may be recognised, which, although very superficial, 
and with difficulty perceivable by the eye, are, nevertheless, of 
