OZENA. 241 



The turbinated bones are situated one above the other, as 

 shown in the engraving. The outer surface of the superior 

 bone is placed in close relation to the inner surface of the nasal 

 bones, and to the frontal sinus/! It is upon and within these 

 structures, we again state, that Ozena has its seat ; and it is 

 important to the reader that he should bear in mind the facts 

 we have detailed respecting this, as he will find them of the 

 highest value with regard to the treatment of the malady. 



Diseases which mat be mistaken foe Ozena. — The 

 diseases which may be mistaken for Ozena are — Glanders^ 

 Caries of the Upper Molar Teeth, of the Upper Jaws, Sinus 

 of the Palate, and Polypus of the ISose. 



In every case of Ozena, the teeth of the patient should be 

 examined with the most scrupulous care ; and, if found dis- 

 eased, extracted forthwith. 



The most certain mode of testing whether the disease be 

 Glanders or not, is to inoculate a young ass with a portion of 

 the discharge from the nostrils of the patient, and await the 

 result. 



The existence of a Sinus of the Palate may be known by 

 examination of the mouth, and by the character of the dis- 

 charge. Is the discharge purulent, or is it mixed with small 

 particles of half-masticated food ? SometiDies the discharge 

 arising from Caries of the Molar Teeth may also be of a similar 

 character ; while Polypus of the Nose may be determined, either 

 by the presence of the morbid growth, or by the obstruction 

 which it causes to breathing within the affected nostril.* 



Pathogonomonic Proofs of Ozena. — The diagnosis of 



Ozena is a matter which frequently requires both great care and 



* For further information with, respect to the above diseases, the reader is 

 referred to the several articles in the present volume, which especially treat upon 

 these maladies. 



Q 



