DISEASES or THE SKJN. S^y 



tlie caly.^ of that fruit. These aic esteemed 

 ill the Levant for their aromatic und acid 

 flavour, especially when prepared with sugar. 



It may be remarked tiiat all the excres- 

 cences above mentioned are generally more 

 acid than the rest of the plant that bears 

 them, and also greatly inclined to -turn red. 

 The acid they contain is partly acetous, but 

 more of the astringent kind. 



The diseases of the skin, to which many- 

 vegetables are subject, are less easily under- 

 stood than the foregoing. Besides one kind 

 o£ Honey-dew, already mentioned, p. 189, 

 something like leprosy may be observed in 

 Tragopogufi ?}wjor, J acq. Amtr. t. 2Q, which, 

 as I have been informed by an accurate ob- 

 server, does not injure the seed, nor infect 

 the progeny. The stem of Shepherd s Purse, 

 Engl. Bot, t. 1485, is occasionally swelled, 

 and a white cream-like crust, afterwards 

 powdery, ensues. The White Garden Rose, 

 Rosa alba, produces, in like manner, an 

 orange-coloured powder. It proves very dif- 

 ficult, in many cases, to judge whether such 

 appearances proceed from a primary disease 

 in the plant, arising from unseasonable cold 



