404 THE LAWS OF ORGANIC 



debility ? Neither the blood nor its vessels are 

 in the same diseased condition or diminished 

 state of vitality. 



CCCCLXXXII. Dr PARRY, in speaking of 

 sea-scurvy, seems to think that it may probably 

 in all cases be preceded by an increased momen- 

 tum of blood, and, still further, that petechise 

 are probably more rare in typhus than in fevers 

 of a purely inflammatory type.* 



Dr PARRY'S experience does not harmonize 

 with that of the generality of observers. Petechias 

 are seldom or never found in diseases of a purely 

 inflammatory description as long as the inflamma- 

 tory type continues, but are found at the termina- 

 tion of the excited action, when the body has 

 become extremely debilitated by the previous 

 excitement and derangement of functions. The 

 severe forms of the plague are occasionally un- 

 accompanied by inflammatory action, and yet 

 we perceive in this dreadful disease the most 

 extensive consequences of asthenic influence. 



CCCCLXXXIII. Dr CULLEN has endeavour- 

 ed to explain why different kinds of hemorha- 

 gies occur in different organs of the body at the 

 various periods of life ; but his arguments appear 

 to me quite unsatisfactory. He says, that youth 

 is most subject to epistaxis, because the head has 

 its organization the soonest completed ; the con- 

 sequence of which is, that the solid parts less 



* Elements of Pathology and Therapeutics, p. 1 64. 



