ERUPTIVE FEVERS. 169 



of this, yet in the confidence which I had in his sagacity, I have 

 practised it several times, and with success." 



DCXXXVIII. The eruption, as we have said, commonly 

 appears upon the fourth day, first on the face, and successively 

 on the lower parts of the body. It discovers itself first in small 

 red points, but soon after, a number of these appear in clusters, 

 which do not rise into visible pimples, but by the touch are 

 found to be a little prominent. This is the case on the face, 

 but on other parts of the body, the prominence, or roughness, 

 is hardly to be perceived. On the face the eruption retains its 

 redness, or has that increased for two days, but on the third, the 

 vivid redness is changed to a brownish red ; and in a day or two 

 more, the eruption entirely disappears, while a mealy desqua- 

 mation takes place. During the whole time of the eruption, 

 the face is somewhat turgid, but seldom considerably swelled. 



DCXXXIX. Sometimes, after the eruption has appeared, 

 the fever ceases entirely ; but this is seldom the case, and more 

 commonly the fever continues, or is increased after the eruption, 

 and does not cease till after the desquamation. Even then 

 the fever does not always cease, but continues with various du- 

 ration and effect. 



DC XL. Though the fever happen to cease, upon the erup- 

 tions taking place, it is common for the cough to continue till 

 after the desquamation, and sometimes much longer. 



In all cases, while the fever continues, the cough also conti- 

 nues, generally with an increase of the difficulty of breathing ; 

 and both of these symptoms sometimes arise to a degree that 

 denotes a pneumonic affection. This may arise at any period 

 of the disease, but very often it does not come on till after the 

 desquamation of the eruption. " Generally, the cough is quite 

 dry, and in consequence of that, is attended by considerable 

 hoarseness ; but upon occasions,4t very soon becomes of the hu- 

 mid kind ; and it is always one of the most salutary symptoms 

 of the measles when the cough is attended with some expecto- 

 ration." 



After the same period, also, a diarrhoea frequently comes on, 

 and continues for some time. 



DCXLI. It is common for the measles, even when they have 



