St met lira/ Charactcnstics 



121 



had been shortened to four 

 inches — none of which then had 

 rootlets — and all its other roots 

 had been remo\'eci entireh', and 

 it was again lifted the following 

 August and photographed. At 

 this time all the new roots (those 

 sent out directly from the rhi- 

 zome after the transplanting) 

 were removed before photo- 

 graphing, to give a better view 

 of the three shortened roots and 

 their new growths. 



The roots and their rootlets 

 furnish nourishment from the 

 ground mainh" through root- ,, ,-,,- ,,, 



hairs \\hich are developed on roots (shortened at 1,2, and 



. -\) AND THREE MOXTHs' ROOT- 



them. These begin to come lets produced thereerom 



1 , r 1 .1 1 AETER THE SHORTENING 



shortly after the root has made 

 its appearance, on its whole 



surface for a short distance from its extremit}'. They 

 are so small that the}- can hardh- be seen except b}- 

 the aid of a magnifier and appear as fine glistening 

 lines. They attain a length of hardh' a tenth of an 

 inch, and are very numerous. The}' arc short lived 

 but new ones develop in front of them as the root 

 lengthens. When a rhizome with growing roots is 

 taken up, however carefulh', the root-hairs will un- 

 doubtedh' be destro}-ed; but if the rhizome is replanted 

 while the roots are yet plump and in such good, fresh 

 condition that they continue alive, new root-hairs will 



