DISPLACEMENT. 86 



malformation, " the first leaf of the terminal bud sepa- 

 rated by a long internode from the other leaves, which 

 remain closely packed ; and further, suppose an evident 

 thickening of the upper portion of the lengthened 

 internode, and there will be not only a single bulb, 



Fio. 39. Unusual position of bulbs of tulip ; the parent-bulb cut open. 



bearing with the leaves of the present year all the 

 remnants of the leaves of the two preceding years, but 

 two bulbs placed one above another, on the ' same axis, 

 separated by the length of the internode." 



The formation of bulbs in the axils of the leaves, as 

 happens occasionally in tulips, is further alluded to 

 under the head of hypertrophy. 



Displacements aflFecting the inflorescence. These are, for 

 the most part, dependent on hypertrophy, elongation, 

 atrophy, spiral torsion, &c., but there are a few in- 

 stances of a different nature, which may here be alluded 

 to as not being coincident with any of the phenomena 

 just mentioned. Sometimes these deviations from the 

 ordinary position have the more interest as affecting 



