LECT. VIII.] ORIGIN OF BRANCHES. 388 



bud and germ *, and consequently of the future 

 branch. To examine the structure minutely, let 

 us place a longitudinal and a transverse slice of 

 the shoot under the microscope. 



In the portion of the longitudinal slice of 

 which a highly magnified drawing is now before 

 us (see Plate 7, fig. 2), we perceive the section a. 

 of one of the lobes, situated at the point where' 

 . the footstalk of the leaf b. separates from the stem 

 c. The small speck at the base of the lobe ap- 

 pears now an obtuse, pyramidal, insulated body ; 

 while nearly all the cellular matter above e^ which 

 is apparently the line of separation between the 

 system, if I may be allowed the expression, of the 

 bud and that of the leaf, seems directed towards 

 it. The bundle of spiral vessels, d., passes up- 

 wards to supply the leaf; but neither the lobe 

 nor the speck has any vessels, unless we suppose 

 that some from the liber^. above it, are given off 

 for its supply ; a circumstance which, however^ 

 is conjectural only, as none is perceptible. The 

 whole of the cellular substance, connecting the 



slice. The whole of the cuticle in this young state of the 

 branch is studded with small pedicillated glands, which exude 

 a viscid tenacious fluid. 



* It is necessary, before proceeding, to explain the meaning 

 of these terms. The bud or gem is the pyramidal body, as it 

 appears on the surface of the stem or branch covered with its 

 scales ; the germ is the rudiment of the young branch, and 

 leaves contained within these scales. 



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