By Sir C. Lemon, Bart. 



511 



remote part of the plant as an ingrafted peculiarity ; and in others 

 where the derivative character is more completely established, the 

 pure parent growth would still occasionally exhibit itself. But in 

 the trees which I find growing in these plantations, there is no such 

 mixture. They are altogether Pinaster, or altogether of the doubt- 

 ful kind; and amongst many scores of specimens which I have 

 examined, I have never yet found one which partook of both forms 

 of growth : in no one instance have I seen a cone in the place of a 

 leading shoot in one part of a tree and in its ordinary situation in 

 another. This I conceive to be conclusive with respect to the 

 notion of the tree being hybrid, and the argument is almost as 

 applicable to the only remaining solution, namely, that the tree 

 may be a variety induced by peculiarities of climate and soil, and 

 exhibiting the ordinary effects of such change. 



Here also it is difficult to conceive that in some part of some 

 trees, where the conversion might be incomplete, indications of an 

 effort to adhere to the original type should never appear; but 

 these indications are, as far as my observation goes, totally wanting, 

 and the conversion, if such it be, is either complete or not com- 

 menced. There are also other difficulties in the way of this last 

 supposition. 



Changes of organs, I apprehend, take place only by multiplica- 

 tion of parts, by abortion, or by conversion of the rudiments of the 

 infant shoot according to a fixed rule of progressive development ; 

 whether from the centre to the circumference or vice versa, I will 

 not now enquire, for in neither direction can we find any explana- 

 tion of a counterchange of parts by which the cones and shoots 

 should be reciprocally converted. 



Where multiplication takes place the side shoots become very 

 numerous ; and this is so common as almost to form a character of 

 the tree. Where abortion takes place the side shoots are diminished 

 in number, and sometimes totally wanting, and the cone is left 



