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ROYAL HORTICULTURAL SOCIETY. 



case the spots are sometimes 6 inches long and parallel to each 



other, following the direc- 

 tion of the nerves. On the 

 tip of the leaf the margin 

 is followed, and the colour 

 paler and redder. 



I take this opportunity 

 of giving a figure of a very 

 curious form of spot, which 

 has been forwarded to me 

 by Mr. Warner, on Dendro- 

 biwn densiflorum. Whether 

 this is really a distinct 

 disease from the common 

 black spot, of which fig. 1 c 

 gives the general appear- 

 ance, I am unable to say. 

 It differs in forming sub- 

 orbicular spots simulating 

 some old encampment with 

 a central area and three or 

 four concentric trenches. 

 Sometimes the regularity 

 of the lines is deranged by 

 two or more of the spots 

 originally touching each 

 other. The spots do not 

 in general completely pene- 

 trate the leaf, though some- 

 thing of the concentric ar- 

 rangement appears on the 

 other side. This form of 

 spot is exhibited at fig. 5, of the natural size. 



VI. Note upon Cotoneaster Simmonsii. 

 By J. Bateman, Esq., TYR.S. 



I have much pleasure in bringing before the notice of the Horti- 

 cultural Society a plant that cannot but prove to be extensively 

 useful for the covering of house-fronts and of garden- or terrace- 



