FEVERS. 483 



back, but from thence, passing over the whole body ; and now 

 his skin feels warm to another person. The patient's sense of 

 cold increasing, produces a tremor in all his limbs, with frequent 

 succussions or rigors of the trunk of the body. When this 

 sense of cold and its effects have continued for some time, they 

 become less violent, and are alternated with warm flushings. By 

 degrees, the cold goes off entirely, and a heat greater than na- 

 tural prevails, and continues over the whole body. With this 

 heat, the colour of the skin returns, and a preternatural redness 

 appears, especially in the face. While the heat and redness 

 come on, the skin is relaxed and smoothed, but for some time 

 continues dry. The features of the face and other parts of the 

 body recover their usual size, and become even more turgid. 

 When the heat, redness, and turgescence have increased and 

 continued for some time, a moisture appears upon the forehead, 

 and by degrees becomes a sweat, which gradually extends down- 

 wards over the whole body. As this sweat continues to flow, 

 the heat of the body abates ; the sweat, after continuing some 

 time, gradually ceases ; the body returns to its usual tempera- 

 ture, and most of the functions are restored to their ordinary 

 state. 



" Is the patient, when he feels the cold, really colder ? At 

 one period he is, but afterwards the thermometer and the feel- 

 ings of the bystanders shew the heat to be increased, even whilst 

 the patient is trembling. 



" Now this is one series of phenomena which characterizes an 

 intermittent fever. Indeed, there are not perhaps in nature two 

 things which are absolutely uniform, but this is the series that 

 commonly and almost universally characterizes a paroxysm of 

 intermittent fever." 



XI. This series of appearances gives occasion to divide the 

 paroxysm into three different stages, which are called the Cold, 

 the Hot, and the Sweating Stages or Fits. 



In the course of these, considerable changes happen in 

 the state of several other functions, which are now to be men- 

 tioned. 



" In the foregoing description I have chosen those phenomena 

 that are especially perceived by the person himself, and are most 

 obvious to the bystanders ; but there is a series of phenomena 



