20 CLINICAL VETERINARY MEDICINE AND SURGERY. 



resembling the bacillus of necrosis mentioned by Bang. Pus from the 

 pulmonary abscesses also contained several varieties of organisms, 

 streptococci predominating. In the intra-cranial exudate I only 

 found streptococci in short chains, usually of three to six. 



In this patient the phases of the process were probably as follows : 

 At first, acute inflammation of the mucous membrane of the turbinated 

 bones, and ethmoid cells ; afterwards, partial necrosis of these organs, 

 and suppurative inflammation of the ethmoidal and sphenoidal sinuses. 

 From the ethmoid cells, suppuration extended through the holes in 

 the cribriform plate of the ethmoid to the meninges of the brain. 

 While these processes were gradually developing in the direction of 

 the meninges, pyogenic organisms must have entered the venous 

 circulation, and brought about purulent infection. 



In volume ix of the Jouvnal of Military Veterinary Medicine, 

 Delamotte recorded a case which in regard to the nature of its 



Fig. 4. — Necrosis of the turbinated bones. 



lesions shows certain analogies to the preceding. It refers to a mule, 

 which one morning, without any preliminary symptoms, was suddenly 

 attacked with abundant epistaxis, and discharged from the mouth 

 torrents of black, thick blood, of repulsive odour. An hour and a half 

 after the onset of bleeding the animal died from loss of blood and 

 asphyxia. At the post-mortem examination, in addition to obstruction 

 of the bronchi by blood and lesions of asphyxia, the examiner found 

 the mucous membrane of the ethmoid cells gangrenous, greenish- 

 yellow, softened, and of offensive odour. 



Necrosis of the turbinated bones usually long remains localised, 

 and reveals itself by an offensive, one-sided discharge, interference 

 with respiration due to diminution in the nasal cavity, trifling en- 



