DISEASES OF THE BLOOD. 57 



was less acute, the fever less marked, and the local lesions 

 never severe enough to entirely prevent deglutition. The 

 glands of the throat and neck were early swollen, and in- 

 creased in size rapidly. Owing to extensive infiltration 

 of the areolar tissue there was very awkward carriage of 

 the head, and the patient was very restless until coma 

 set in. The third type was nasal. With less fever than 

 in the other forms the animal was dull, had sore-throat, 

 and a sanious discharge from the nostrils and from the 

 mouth (the latter mixed with saliva). In these, death 

 supervened less rapidly than in cases of the other types, 

 and before death the mouth became laden with sordes, 

 the breath foetid, and the lymphatic glands much swollen. 

 Autopsy showed that the disease had involved the posterior 

 nares but that the pharynx was most affected. Of the 

 animals which recovered one was temporarily blind of 

 both eyes from opacity of the cornea, another suffered 

 from clonic spasms of the face and neck followed by 

 paraplegia, but ultimately thoroughly recovered. The 

 outbreak occurred in kennels in a very unsanitary state. 

 Law mentions " croup " as one of the diseases of the 

 dog and recommends its treatment by emetics. Bossi 

 records a case where a dog ate excreta from a child with 

 diphtheria, and died on the third day from suffocation. 

 Autopsy showed the mucous membrane of the fauces 

 pulpy and denuded of epithelium. Membranous exuda- 

 tion was here and there found, forming compact, thick, 

 adherent excrescences, or ulcerations blackish and very 

 deep. The inflammation extended to the pharynx and 

 larynx. The heart and lungs were blackish and flabby, 

 and contained pitchlike blood, and several fibro-albu- 

 minous concretions. Letzerich, in ' Virchow's Archiv ' for 

 April, 1875, p. 178, describes how a dog was vaccinated 

 with matter to which a small amount of diphtheritic mate- 

 rial had been added. On the third day after, a soft 

 swelling was observed at the seat of inoculation. The 

 wound became indurated, gaping, and covered with a 

 whitish, doughy-looking exudate. The swelling continued 

 until the dog died, when wandering vegetable organisms 



