Of a Plant growing on blighted Leaves, 307 
were fplit the pores, which will appear juft as they are 
reprefented at fig. B, but if a very thin piece be cut off 
parallel to the plane of it, the pores of it will be tranf- 
verfly divided, and will appear as exprefled in fig. A. 
Of a plant growing on the blighted, or yel¬ 
low fpecks of damafk-rofe leaves, bramble 
leaves, &c. 
I T is obfervable that in the months of June, July, 
Auguft, and September, that many of the green leaves 
of rofes begin to dry and grow yellow, but efpecially the 
leaves of the old fhrubs of damafk rofes, are all fpotted 
with yellow ftains, and the under-fides juft againft them 
have little yellow hillocks of a gummy fubftance, and 
feveral of them have fmall black fpots in the midft of 
thofe yellow ones. Upon examining thefe with the mi- 
yrofcope, multitudes of little black bodies like feed-cods 
Were perceived to fpring out of feveral fmall yellow knobs, 
and to be faftned to thefe knobs by a fmall ftraw-coloured 
and tranfparent ftem, many of thofe hillocks were bare 
as if thofe bodies lay yet concealed, at at G, fig. 541. 
In others they were juft fpringing out, as at A; in others, 
as at B, they were juft out, with very little or no ftalk j 
in others, as at C, the ftalks plainly appear; in others, 
and at D, thofe ftems were grown bigger and larger; 
and in others, as E F, &c. thofe ftems and cods were 
grown a great deal bigger, and the ftalks more bulky 
about the root, and very much tapered towards the top : 
as they increafed in bulk they began to turn their tops 
towards their roots, in the fame manner as that of mofs 
is obferved to do. The whole fquare of this figure repre- 
fents a fmall part of a rofe-leaf no bigger than the letter ff. 
X 2 Thefe 
