84 



DISEASES OF SWINE AND OTIIEK ANIMALS. 

 Experiment No. 7 — Continued. 



Post-mortem examination. — Blood: Scanty; that from axillary vein is neutral or 

 sliglitly alkaline. Ked globules deeply creuated and shrunken very disproportion- 

 ately to the Tvliito globules, Avbicli are largo and rounded, but appear detieient in 

 numbers : 1 : : bO. 



Skin : Section of the blue skin of the car shows cutis, cuticle, and bristle foUiclea 

 deeply congested, most of the capillaries being blocked by coagulated blood, and 

 microscopic extravasations appearing at short intervals. The red globules in this 

 part arc full, rotmded, and of the usual size. 



Digestive orf/ans: Tongue has a series of ^vhite sloughs aloug its tip and right margin, 

 resembling those of the intestines, being yello^Yish-white, laminated, non-vascular, 

 and with A'ery slight congestion and redness around them. Microscopically these 

 sloughs are composed of epithelial cells with much granular matter. In one a central 

 red spot lu'csents stagnation and coagula iu the capillaries and micro!3copic extravasa- 

 tions. It is manifest these form in the same manner with the sloughs in the intestines. 

 Circumscribed spots of the nnicous membrane become the seat of congestion, resulting 

 in coagulation of the blood in the capillaries and exudation and extravasation alike 

 into the epithelial and sub-epithelial layers, leading to thickening and indnration of 

 tho deeper strata, and death of the more superficial ones. 



Soft pulate : The buccal or lower wnrl'ace henrs a. similar slough, Avhile many of its 

 follicles are red, swollen, and Idled with a yellowish-white (chee.syf) matter. 



Throat: The lar^-ngeal surface of the epiglottis is congested, i\w rinlness beiug iu- 

 efraceable by ju'cssurt^ The mucous membrane on the back of the right arytenoid 

 cartilage bears a Ibnr-lobed warty looking excrescence like a small ]iin's head, which, 

 under the mier()sco)>e, discloses only round granular cells .'iud fret' granules. 



Ahdomrii, tSloiiidch : This contains :i, few ounces of half-digested food. This, together 

 with th(^ lower ])ortion of the gullel, is of a. deep yellow ime, apparently trom regur- 

 gitated l,)ile. No mark('d cong(;stion of the r.iucous membrane. 



iSmalli>itestine: Shows circumscril)ed spots and patches of congestion and small 

 petechia, but no erosions. 



