68 Stable Management and the Prevention of Disease 



blood from the head, through the lymph which is infiltrated 

 in the neck pressing upon the jugular veins. 



3. Indirect suffocation, from lymph infiltrated into the 

 intra-lobular tissue of the lungs, impeding the flow of blood 

 through the air-cells. 



4. Direct suffocation, from the excessive accumulation of 

 lymph in the areolar tissue around the throat closing the 

 aperture of the larynx. 



The most common cause of death is the last-mentioned. 

 This is shown by the fact that, in a majority of cases, the 

 bronchial tubes are fiUed with frothy mucus as they are after 

 death from drowning, and also that the noise produced by 

 the impediment to breathing can be distinctly heard coming 

 from the throat. 



Post-mortem Appearances. — The post-mortem appearances 

 vary in some degree, though there is one common charac- 

 teristic, viz., the effusion of lymph, looking like yellow jelly, 

 into the areolar tissue, accompanied with dull red patches of 

 all sizes on the surfaces of the mucous and serous mem- 

 branes, produced by aggregations of red corpuscles or of their 

 colouring matter. The blood, too, is dark, and has little or no 

 tendency to coagulate. 



When the brain has been chiefly affected there will be 

 found some congestion, with effusion of lymph into the ven- 

 tricles and petechise in the membranes. 



When the disease has been concentrated to a considerable 

 extent on the digestive organs, there is effusion of lymph 

 into the connective tissue of the omentum and other parts, 

 into the walls of the intestines and under the epithelium of 

 the serous membranes ; parts of the stomach or intestines 

 are stained a dull red colour, and the spleen is gorged with 

 very black blood of the consistency of treacle. 



In those cases where the respiratory organs have been 

 chiefly affected, there will be found effusion of lymph into 

 the areolar tissue round the throat, down the under part of 

 the neck to the chest, and in the spaces between the larynx, 

 jugular veins, carotid arteries and muscles of the neck. 

 Here and there portions of muscle or connective tissue or 



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