386 CONSERVATIVE ORGANS. [LKCT. VIII. 



lobes with the pith g. is more opaque than in any 

 other part, from its cells being filled with small 

 amylaceous granules ; but whether these are de- 

 posited by the vessels which convey the proper 

 juice from the leaf above then), it is impossible to 

 decide. The chief fact established by this view of 

 the parts, is the connexion between the cellular 

 matter of the lobes of the gem, and that of the pith, 

 the medullary sheath, the bark, and the liber, in 

 the succulent shoot ; while, nevertheless, the germ 

 itself appears a distinct body. In the transverse 

 section (Plate 7, fig. 3) this connexion betwixt the 

 lobes a. and the pith e. is still more apparent ; for 

 neither the spiral vessels d. which appear like 

 a circle of dark spots surrounding the pith in 

 every other place ; nor the alburnous matter c. 

 which accompanies them, interfere to prevent this 

 union. In this section, also, the distinct nature 

 of the germ, notwithstanding its connexion with 

 the surrounding parts, is rendered very evident. 

 As the bud advances in growth, it gradually as- 

 sumes somewhat of a pyramidal form; and the 

 organization of the germ within it, that is, of the 

 new branch and leaves, commences. Towards the 

 end of summer, the lobes begin to appear as op- 

 posite scales, from amidst which the apex of the 

 germ, covered by other scales, is observed pro- 

 truding; whilst in a longitudinal section placed 

 under the microscope, the rudiments of the new 



