does injure the delicate tissue of young leaves, and 

 render it incapable of performing its allotted office. 

 \Ye believe, moreover, that the evil attendant upon 

 an accumulation of watery matter in the foliage is ag- 

 gravated by cold, which, no doubt, interferes wdth the 

 great function of perspiration ; for, in a warm climate, 

 the peach would probably throw off its superfluous 

 watery particles as fast as the leaves received them. 

 What we contend for is, that cold must be regarded 

 at most as a mere secondary cause ; and that no such 

 mischief as we see produced would arise if the wet of 

 the soil did not overcharge and distend the leaves. 

 It is, therefore, to the border that we should look ; 

 and our great object should be to guard the soil of 

 newly-sprouting peach-trees from being suddenly filled 

 with water, even although it is quickly drained off 

 again. In the absence of this, we shall no more, by 

 shades or coverings, prevent the leaves from blister- 

 ing than we do in the case of vines by glazed roofs ; 

 and we doubt much whether, if the border were kept 

 permanently clear of sudden and excessive accessions 

 of water, any considerable amount of blister would 

 appear, even although the leaves were left unguarded 

 to the cold radiation, dangerous as that action is to 

 plants so tender as the peach-tree. {Gard, Chron, 

 1845, 431.) 



Mildew, whether on the sterns of the wheat, or on 

 the leaves of the chrysanthemum, pea, rose, or peach. 



