58 



COMPANION TO TROPICAL READERS 



Expt. 86. Propagation by Tubers. 



(a) Obtain some tubers (e.g. white yam and Irish 

 potato), cut them into pieces and plant; note the de- 

 velopment of eyes and the growth of new plants. 



(b) Get a glass jam-pot and put a sweet-potato tuber 

 into it with the uppermost end protruding, fill the vessel 

 with water, and note the bud that develops. 



Expt. 87. Propagation by Bulbs. 



(a) Cut the bulb of a red lily or onion in two and look 

 for the bud from which a new plant may be produced. 



(b) Plant a bulb in a pot of soil or in the ground, and 

 record what growth takes place. 



jEpidetrnzb. 



Hoot 

 ..Wood 



Position o, 



%cd ' 



J&o? 



. Calliu) 



CorJc 



Fig. 26. Section of the Base of a Woody Cutting 



Expt. 88. Cuttings in Soil. Plant six cuttings each 

 of hibiscus, sweet potato, and rose. At intervals take 

 up some of the growing cuttings and observe the forma- 

 tion of callus and the development of roots (fig. 26). 



