330 THE DISEASES AND DISORDERS OF THE OX. 



markedly as one of the symptoms of scarlatina itself. Tn other 

 words erythema mammillarum is possibly but a local mani- 

 festation of the general fever. 



We shall then proceed to mention some points elicited in 

 the investigation of Power, Cameron, and Klein, and treat 

 shortly of the malady they have described as having occurred in 

 certain cows, and as having given rise, by vitiating the milk, to 

 scarlatina in the human subject. Accepting the conclusions 

 drawn by these observers, and in consideration of the fact of a 

 pronounced resemblance in the character of the changes which 

 take place in both diseases, we may consider that this Hendon 

 cow disease to which we refer is nothing else than bovine scar- 

 latina, the same malady which veterinarians had previously, but 

 by no means accurately, described. 



Scarlet Fever in Man. 



And now, in continuation of our subject, we propose to give 

 a general account of Scarlet Fever as it appears in man, after 

 which we shall give an abstract of the investigations recently 

 conducted at tlie instance of the Medical Officer of the Local 

 Government Board by Mr. Power in co-operation with Drs. 

 Klein and Cameron, mentioning and briefly discussing some of 

 the very iujportant points elicited by the classical researches of 

 these able investigators. 



Scarlet fever, then, may be spoken of as an infectious disease, 

 which is chiefly characterised by the appearance of a general 

 punctiform eruption, which generally manifests itself on the 

 second day, and by inflammation of the fauces, tonsils, and 

 kidneys. 



Dr. Gee defines scarlet fever as an acute pyretic disease, 

 specific both in its cause and in its course, and producing in its 

 course an exanthem with characters quite peculiar. 



In regard to its history, it appears that down to about the 

 middle of the sixteenth century this fever and the disease 

 known under the name of measles were not considered to be 

 distinct and different maladies. It was only after a closer 

 examination of them that their distinguishing characteristics 

 were observed. 



The earliest record which we have of the existence of scarlet 

 fever is that which bears the date a.u. 1556, the year in which 



