29i SCARLATINA. 



cliemical properties, and in the physical characters of its 

 several constituents ; it is less disposed to coagulate. In many 

 situations of the body the general connective-tissue has a rusty 

 tinge, while that in intimate association with mucous and serous 

 membranes is irregularly infiltrated with a jelly-like and more 

 or less coloured exudate, the membranes themselves being 

 variously marked with punctated or diffuse patches of a red 

 colour. The membranes most extensively and clearly marked 

 with these petechia are the mucous membranes of the nose 

 and mouth, the serous membranes of the heart, and that of the 

 abdomen. None of these markings are, however, on examina- 

 tion after death, so bright in colour as during life. The mem- 

 brane and submucous connective-tissue of the laryngeal and 

 pharyngeal regions, with the adjacent glands, gives evidence of 

 at least congestive, probably also inflammatory action, being 

 largely infiltrated with the products of the diseased process 

 which has occurred here. With the lymphatic or mucous 

 follicles scattered over the pharyngeal membrane, and particu- 

 larly the tonsilar cavities, certain peculiar changes have occurred 

 chiefly affecting their cell-contents. In some instances these 

 changes are of a more distinctly destructive character, portions 

 of the membrane and subjacent tissue exhibiting gangrene and 

 appearances of removal. In the abdomen the glandular struc- 

 tures, great and small, often show congestion and increased 

 friability, their textural consistence giving way under very 

 moderate force. 



Symptoms, a. Of Scarlatina Simplex. — The occurrence of 

 symptoms indicative of the simple form of scarlatina seldom 

 occur before the end of the first week of the primary fever 

 which it may accompany or succeed, and frequently they 

 are delayed for a longer period. Unaccountable depression, 

 renewal or increase of febrile symptoms — according as the 

 previous fever has intermitted or only remitted — not at all 

 indicated on the previous examination of the animal, with a 

 slightly swollen condition of the eyelids, are most probably 

 the features which solicit a more careful examination. The 

 internal temperature will usually have risen two degrees from 

 the previous examination ; the pulse, about sixty per minute, is 

 rather quick and of little volume ; the respirations will not at 

 this time be much or at all aftccted. The horse, when caused 



