DISEASES 0£ THE BLOOD. 3& 



the epiglottis is specially liable to be affected, and the 

 pharynx is more or less involved. It has been remarked 

 that the raging form of the disease is specially charac- 

 terised by respiratory lesions, even the costal pleura and 

 diaphragm being affected in some cases, whereas in the 

 dumb form the changes are most marked throughout the 

 alimentary canal. The salivary glands are congested, and 

 the lining membrane of the stomach, and to a variable 

 extent also of the intestines, is the seat of spots of extrava- 

 sated blood and streaky stagnation; also we may find sphace- 

 lated ulcerated patches or extravasations of blood between 

 the coats of the stomach, and Blaine speaks of the mucous 

 membrane as "not unfrequently sprinkled over with 

 pustular prominences." Adhesions of the peritoneum and 

 intussusception are often present. The body rapidly 

 decays. The contents of the stomach are, in addition to 

 the usual accumulation of indigestible substances, merely 

 a small amount of coffee-coloured material, apparently 

 extravasated blood altered in colour and characters by the 

 digestive juices. In this, as in almost all other blood 

 diseases, petechias may be found in any or every of the 

 tissues, as the peritoneum, mediastinum, or substance of 

 the heart. The meninges of the brain (especially the pia 

 mater), and of the spinal cord at its anterior extremity, 

 show an exceptional amount of congestion which the sub- 

 stance of the enclosed nerve masses also occasionally 

 shares. The arachnoid and subarachnoid fluids are gene- 

 rally somewhat increased in quantity. The lymphatic 

 glands throughout the body, and the spleen and liver are 

 generally found enlarged and congested. Such are the 

 most frequent and constant lesions detectable on naked- 

 eye examination of the carcases of rabid animals. The 

 degree of blood extravasation varies in different cases, 

 being sometimes excessive and sometimes with difficulty 

 detectable, the lining membrane of stomach, endocardium, 

 and brain are the most frequent seat of extensive escape 

 of blood. The conditions of the stomach, its contents, of 

 the larynx, fauces, and base of the tongue are most 

 useful for diagnostic purposes. Inflammations of various 



