the Human Kind and other Animals. 269 



riola ; and, if I do not greatly mistake, time will com- 

 pletely establish the identity of the poisons which 

 induce the two affections, however different from each 

 other they may now appear to be. 



Of Measles, of Scarlatina, and of Miliaria, I have no- 

 thing particular to say. It may not, however, be amiss 

 to observe in this place, that Cats, and other species of 

 mammalia, are by no means exempt from some of the 

 Catarrhal affections, which are considerably allied to 

 measles. 



Of Petechias, as a disease of animals, I have met with 

 intimations, by no means obscure, in the writings of 

 some of the older physicians on epidemics. Indeed, 

 the existence of petechial spots, as a symptom of dis- 

 ease in animals, will hardly be doubted, when we con- 

 sider, that such petechia; are merely an accidental 

 symptom of malignant fevers ; and that malignant fe- 

 vers of different kinds have been extremely common, 

 in all ages and countries, among animals; especially, 

 perhaps, among the Pecora, — and the Solipeda*. 



The term Pestis is, I think, by far too vague for the 

 purposes of exact medical science. It is certain, how- 

 ever, that the term is one of a very braid import in the 

 writings of the ancient physicians and historians of 

 < Ireece and Rome. From some of these writers we 

 learn, that the same pestilences prevailed at the same 



' The horse and other animals of this natural family, to which, 

 In my work en Zoolfigy, I give tlie name of Cabat.t;. 

 r.VVPl.. M m 



