116 DISEASES OF THE GREYHOUND. 



PATHOLOGICAL ANATOMY. There appears to be in all cases 

 intense inflammation of the brain and spinal marrow, ending in 

 loss of function, as is the case in all inflamed glands. The 

 glandular system throughout is also more or less affected, espe- 

 cially the salivary glands ; but the mucous glands of the stomach 

 and bowels, the liver, pancreas, and kidneys, are all more or less 

 injected with blood. Indeed, reckoning the brain as a gland, 

 which no doubt it is, the glandular system seems to be the only 

 part of the body affected, as far as anatomical examination allows 

 us to detect alterations of structure. The poison itself is beyond 

 the ken of the microscope or the analysis of the chemist, and 

 can only be known by its effects. The common saliva of a dog 

 out of health, which is somewhat viscid and frothy, could not be 

 distinguished, by any known tests, from that of a rabid dog ; but 

 introduce the latter into one or more abrasions, in man or any of 

 the domestic animals, and though the wound heals, yet a leaven 

 has been introduced into the blood, which, by a process appa- 

 rently similar to ordinary fermentation, soon converts other and 

 healthy particles into its own likeness, and rapidly pervades the 

 whole system. The brain, as the most vital organ among the 

 glands of the body, becomes the most speedily inflamed, and its 

 inflammation produces the series of symptoms which we recognise 

 as rabies, masking and overwhelming all the others, except the 

 flow of saliva. This being patent to the eye, and also the cause 

 of its propagation by means of the bite, has been always the sub- 

 ject of remark, but otherwise it does not deserve the notice which 

 it has received. There is reason for believing that the mucus 



