SECT. IV. DECOMPOSITE ORGANS. 257 



all plants whatever growing within the tropics, the 

 leaf being in them immediately protruded from the 

 bark. It is only in the woody plants of cold cli- 

 mates therefore that we are to look for buds, and in 

 them no new part is added, whether proper to the 

 leaf or flower, without the intervention of a bud. 

 For when the young shoot is produced, it is at the 

 same time furnished with new buds which are again 

 extended into new shoots in the following spring ; 

 and thus the bud is to be regarded as forming not 

 only the cradle but also the winter quarters of the 

 shoot, for which its coat of tiled and glutinous 

 scales seems admirably well adapted. It is found Where 

 chiefly in the extremity, or on the surface of the Sl ' 

 young shoot or branch and but rarely on the 

 stem, except it be at the collar where it produces 

 suckers. It is also generated for the most part in 

 the axil of the leaves, as may be seen by inspecting 

 the annual shoot of almost any tree at rani u^, 

 though not universally so ; for to this rule there 

 exists a curious and singular exception in the bud of 

 the Plane-tree, which is generated in the very centre 

 of the base of the foot-stalk, and is not discoverable 

 till after the fall of the leaf. 



But how are the buds formed which are thus Their ori- 

 developed? Pliny thought they were formed from ^rdtng to 

 the pith, but without ^adducing any substantial rea- ri il , iy . a ?? 



Malpighi. 



son.* Malpighi thought they were formed from 



* Medulla, sive ilia vitalis anima, ante se tendit longitudi- 

 nem irnpellens, quamdiu nodi pervia patet fistula, cum vero 

 VOL. II, S 



