REVIEW. 
625 
goes on favorably the fever will generally abate (in the 
milder states at least) about the fourth or fifth day from the 
commencement of the more acute stage, while in the more 
malignant kinds it is seldom that a change for the better 
occurs before the seventh or eighth day. In the most severe 
forms, however, purpura haemorrhagica supervenes, and the 
patient becomes an emaciated and loathsome looking object. 
“ Complications .—Scarlet fever sometimes becomes asso¬ 
ciated with rheumatism, with congestion of the lungs, with a 
low typhoid state of fever, with typhoid inflammation of the 
lungs, and with purpura haemorrhagica. 
“Prognosis .—If the pulse of the patient falls or becomes 
reduced in the number of its beats w ithin a given time—if 
the appetite gradually improves, and the debility disappears 
—if the swollen limbs gradually reduce in size and the skin 
becomes cooler, a favorable termination may be expected; 
but if the debility becomes more marked—the pulse more 
irritable, feeble, or indistinct—the limbs more swollen, with 
other symptoms, such as total loss of appetite, difficulty of 
breathing, from an insidious typhoid inflammatory action 
going on with the lungs; and finally, if purpura haemor¬ 
rhagica sets in, the prognosis is unfavorable, and the 
chances are that the patient will die. 
“ Causes .—The disease in question is generally manifested 
‘ epidemically, or as an epizooty among horses/ during the 
spring and summer months,* so that its remote causes are 
difficult to arrive at; its exciting causes, how ever, appear to 
depend upon those states of bronchial and laryngeal disease 
so common during the periods of the year above named. I 
have known it to supervene upon an attack of strangles, and 
upon what is designated c influenza/ Animals of all ages 
are subject to its influence. One of the most severe cases 
I ever had under my care, occurred in a foal three months 
old. It may be stated, however, as a general fact, that young 
horses are more liable to the disease than old ones, and that 
during its prevalence exposure of horses to cold and w r et is 
very likely to induce it.” 
Among “ Diseases of the Organs of Respiration,” consti¬ 
tuting Section II, we find “ Spasm of Larynx” set down, 
and indeed treated of, as a primary or idiopathic affection. 
Here w T e are completely at variance with Mr. Haycock. We 
never saw, nor heard of before he made mention of it, such 
* “ This fact, I believe, was first noticed by myself." 
