174 CAUSES OF BARRENNESS, &C. 



constitutional deviations; the former are only, as be- 

 fore observed, accidental exceptions. 



In fine, science has proved, and experience confirms 

 the fact, that the floral members are resolvable into 

 leaves ; but the difficulty with the practical man is, 

 whether leaves be resolvable into flowers and fruit. 



That curious and at the same time elegant ramifi- 

 cation of pedicled glands on the cuticle of the com- 

 mon Provence rose, hence called moss-rose, is said to 

 be only an accidental variation, caused originally by the 

 kind being planted in a very damp and shady situa- 

 tion : and it is affirmed any rose may be made mossy 

 by keeping it constantly in the shade, and where the 

 air is peculiarly moist from want of ventilation. 



