482 



Mr. Lindley on an Exogenous Tree. 



outwards. As to the little patch of bark which was found 

 upon a small portion of the specimen, it may be presumed 

 that at that point there had occurred a 

 cohesion between the liber and alburnum, 

 which the force of the fibres descending 

 from the buds was not sufficient to over- 

 come, and that, in consequence, such por- 

 tion of the bark became incased. 



Whatever opinion may be entertained 

 of the foregoing explanation, it, I think, 

 at least seems impossible to reconcile the 

 structure of this specimen with the theory 

 that bark produces bark, and wood wood; 

 while, at the same time, it is entirely con- 

 formable to the opinion, that wood and 

 bark are both the result of the development 

 of the numerous systems of vegetation, of 

 which every plant consists. 



The accompanying wood-cut represents 

 the specimen, much diminished, and may 

 serve to convey a more exact idea of the 

 subject to which the foregoing remarks 

 apply. 



