34 



COMPANION TO TROPICAL READERS 



the white yam, coco (tania), and Irish potato; and of 

 bulbs of the onion, garlic, and red lily. Observe that 

 all these underground stems possess " eyes " or buds 

 from which shoots may grow. 



Fig. 12. The Potato Plant, showing tubers 



Expt. 20. Edible Portion of Cassava. Observe that 

 the tuberous or fleshy root of the cassava has no buds, 

 and is therefore a root. 



Expt. 21. Edible Portion of Sweet Potato. Deter- 

 mine by examination and experiment whether the edible 

 portion of a sweet potato plant is a tuber or a fleshy 

 root. 



