DISEASES OF THE SKIN. 671 



'""We~ venture to propose, as the pathologic3*"view'^r'tKe~case. 

 that the defect was a dfeficiency of the products of the transfor- 

 mation of the tissues, and that the retention in this way in the 

 system oi matters which ought to he eliminated from it might 

 be the cause of the cutaneous eruption." — {Edinburgh Monthly 

 Journal.) If this he the correct "sdew of the pathology of urti- 

 caria, good results may be expected from the administration of 

 colchicum in obstinate or recurring nettle-rash. 



In some cases of nettle-rash desquamation of the cuticle and 

 hair occurs ; and, what is very peculiar, the hair never assumes 

 its original colour, but remains white on the seat of the rash, the 

 animal being ever afterwards spotted jipon^those parts ^where 

 ithe rash was situated* ^^ 



