

30 



HOW PLANTS (JKOW YKAIt AITKU YKAR. 



ii 



witlierin^ away, wliich ^rcvv in s|)rin<,' \ty one of its huds to inako tlio stoni (/>) hoar- 

 ing the foliage of the sejison This sends out some branches under ground, wiiieh 



in the course of the sea- 

 son thicken at the en«l 

 as they receive a stock 

 of nourislnnent prepared 

 hy this year's foliage, 

 and lieconie new tul>ers 

 (r, a forming one; (/, if, 

 Mell-grown tubers of the 

 season), to live over win- 

 ter, and iiiiiko the next 

 year's growth. 



75. Hecause they live 

 under ground, these tu- 

 bers are commonly sup- 

 posed to be roots ; but 

 they are not, as any one 

 mav see. Their eves 

 are buds; and the little 

 scales behind the eyes 

 answer to leaves ; while 

 roots bear lu'ither buds 

 nor leaves. The fibrous roots which grAw from these sul)terranciin branches are 

 very different in appearance from underground stems, as is plain to see in the 

 P(itato-plant. Fig 60 shows 

 a few of the real roots, as 

 well as several branches of 

 the stem, with potatoes form- 

 ing in all stages at their tips. 

 Fig. 6 1 is one of these form- 

 ing potatoes magnified, show- 

 ing a' little scale behind each 

 eye \vhich answers to a leaf. Fig. 62 is a part of a slice through an eye, more 

 magnified, to show that the eye is really a bud, covered with little scales. 



63 

 Solomon's Seal. 



