464 INTRODUCTORY LECTURES. 



where a want of arrangement, a want of digestion into order. 

 But it is very probable that Sauvages would have done a great 

 part of what I have done, if time and leisure had allowed him. 



I have taken pains to distinguish the species of Sauvages by 

 arranging them under the two heads of idiopathicce and symp- 

 tomaticce. Wherever he found a principal or very remarkable 

 symptom of a disease, which likewise appears as a symptom in an- 

 other disease, he has repeated it as a species in both places, and 

 therefore multiplied the species, to the confusion'of the student, 

 to an unreasonable number. Thus, among the tertian fevers, we 

 have very properly the Tertiana hysterica as a variety of the 

 tertian ; but, afterwards, in the genus Hysteria, you find among 

 the species symptomaticae, the Hysteria febricosa ; by comparing 

 these in the work of Sauvages, you will find that they are the 

 same affection ; the primary disease is a tertian, of which the 

 hysteria is an accidental symptom. The same remark applies to 

 Sauvages' Tertiana epileptica and Epilepsia febricosa, which are 

 one and the same affection a variety of tertian fever. Thus, I 

 have separated the idiopathic and symptomatic species of Sauv- 

 ages ; but I have further given to both quite a new arrange- 

 ment : I have placed those together which I suspect to be one 

 and the same, and next those which have the nearest affinity 

 to one another. In many places again, where Sauvages has 

 multiplied the genera, and repeated the same species under 

 each of them, I have taken care to put these together, so that 

 you jnay know the real number of species. The effect of all 

 this, I think, must be to lessen considerably the whole num- 

 ber ; and it must be comfortable to the student to see that his 

 object, which was seemingly so large, may be comprehended 

 in a narrower view. 



