URTICAEIA. 671 



" We venture to propose, as the pathological view of the case, 

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

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

 system of matters which ought to be eliminated from it might 

 be the cause of the cutaneous eruption." — (Edinhurgh Monthly 

 Joiirnal) If this be the correct view 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, tlie hair never assumes 

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

 animal being ever afterwards spotted upon those parts v.'here 

 the rash was situated. 



