INOCULATION WITH OVINK VIUUS. 



33 



Sheep A. 



spiratory system was inflamed 

 throughout, presenting here and 

 there, in the course of the trachea, 

 accumulations of viscid mucus of a 

 dirty greenish hue. On the Uning 

 membrane of the larynx there 

 were spots analogous to cutaneous 

 nodules, but of a yellowish or 

 blanched appearance, and placed 

 upon a surface of deep Modena red; 

 the parenchyma of the lungs was 

 infiltrated with blood; and the 

 viscera of the adomen shewed 

 more or less of sanguineous en- 

 gorgement. The fore extremity, 

 which had been inoculated with 

 the pus, was much inflamed and 

 enlarged : lymph was eff'used into 

 the cellular tissue, and other mor- 

 bid alterations had taken place in 

 the muscles, tendons, and hga- 

 ments. 



F 



Sheep B. 



similarity to small-pox in the human 

 subject. 



Oct. 3. — Death has put an end 

 to the sufi'erings of this poor ani- 

 mal. The autopsy was made in 

 the presence of Dr. Gregory-, &c. 

 The appearances on dissection 

 vary but little from those which 

 existed in the other sheep, but 

 we give them at length, for the 

 purpose of comparison. Exter- 

 nally, the skin is thickly beset 

 with papulee; the subcutaneous 

 areolar tissue is much engorged 

 with blood ; and on the borders 

 of the lower jaw, the sides of the 

 face and neck, especially just be- 

 hind the ears, small accumula- 

 tions of purulent fluid are pre- 

 sent, occupying the central-in- 

 ternal portion of the confluent 

 nodules. The Schneiderian mem- 

 brane has many yellowish nodules 

 situated on its dark red surface, 

 being but slightly raised therefrom ; 

 similar spots are also observed on the 

 tnucous lining of the lai~ynx, trachea, 

 and bronchi. (See Plate 4.) The 

 cavity of the thorax contains a 

 small quantity of sero-sanguine- 

 ous eflFueion ; the lungs arc con- 

 gested, and the air-cells and tubes 

 filled with a dark frothy mucus. 

 The viscera of the abdomen are 

 but httle altered ; the general 

 congestion of the vessels, which 

 exists universally to a greater or 

 less degree, has, however, changed 

 their normal appearance. 



