150 PRACTICE OF PHYSIC. 



tian type : the eruptive fever continues for forty-eight hours; 

 on the third day the eruption takes place, beginning, I believe, 

 commonly soon after the forty-eight hours ; and it takes an- 

 other third period, to finish what I call the inflammatory state." 



DLXXXVIII. This is a general idea of the disease ; but 

 there are two particular forms or varieties of it, well known un- 

 der the appellations of the Distinct and Confluent, which re- 

 quire to be specially described. 



DLXXXIX. In the former, or the distinct smallpox, the 

 eruptive fever is moderate, and appears to be evidently of the 

 inflammatory kind, or what we name a Synocha. It generally 

 comes on about mid-day, with some symptoms of a cold stage, 

 and commonly with a considerable languor and drowsiness. A 

 hot stage is soon formed, and becomes more considerable on the 

 second and third days. During this course, children are liable 

 to frequent startings from their slumbers ; and adults, if they 

 are kept a-bed, are disposed to much sweating. On the third 

 day, children are sometimes affected with one or two epileptic 

 fits. Towards the end of the third day, the eruption commonly 

 appears, and gradually increases during the fourth ; appearing 

 first upon the face, and successively on the inferior parts, so as 

 to be completed over the whole body on the fifth day. 



From the third day, the fever abates ; and against the fifth, 

 it entirely ceases. The eruption appears first in small red spots, 

 hardly eminent, but by degrees rising into pimples. These are 

 generally upon the face in. small number ; but even when more 

 numerous, they are separate and distinct from one another. On 

 the fifth or sixth day, a small vesicle, containing an almost co- 

 lourless or whey-coloured fluid, appears upon the top of each 

 pimple. For two days, these vesicles increase in breadth only, 

 and there is a small hollow pit in the middle, so that it is only 

 against the eighth day that they are raised into the spheroidical 

 pustules. 



These vesicles or pustules, from their first formation, conti- 

 nue to be surrounded with an exactly circular inflamed margin, 

 which, when the pustules are numerous, diffuses some inflam- 

 mation over the neighbouring skin, so as to give somewhat of a 

 damask rose colour to the spaces between the pustules. As the 

 pustules increase in size, if they be numerous on the face, 



