MOVEMENT AKD REORGANIZATION OF CELLS. 23 



or eyes on their surface, and, in fact, are in every respect 

 typical representatives of their parents, and yet the con- 

 ditions under which they have grown are certainly ab- 

 normal or unnatural. 



Similar movements of cell-matter, as seen in the Po- 

 tato, . occur in other 

 species of tubers and 

 bulbs, and they may be 

 looked for among all 

 families of plants when 

 ' placed under artificial 

 conditions, or subjected 

 to injury or serious dis- 

 turbance of any kind. 

 Propagators of plants 

 can, and often do, utilize 

 these abnormal growths, 

 produced by the reor- 

 ganization of cell-mat- 

 ter, in the multiplica- 

 tion of various species 



. ,. , l Fig. 4. BULB OF LILIUM SPEC1OSUM. 



and varieties under cul- 

 tivation. For instance, with the scaly bulbs of Lilies, 

 like those of L. spcciosum, shown in figure 4, we have 

 a complete and perfect structure which, if planted en- 

 tire, will produce its one, or, at most, two 

 flower stems, with leaves scattered along their 

 entire length, the roots gathering nutriment 

 from the soil for the support of the plant. But 

 if we separate the individual scales and .place 

 them in a congenial material, such as moist 

 earth, sand or moss, keeping them only moder- 

 ately warm, and allow sufficient time for the 

 change, eacji scale will produce a small bulb, 

 an exact counterpart of the parent bulb. A small 

 scale is shown in figure 5, as it appears when un- 



