188 



form on each uiKlerground stem. Dig up a hill of potatoes from 

 tlie garden before school closes. 



A single eve, with a portion of the tuber attached to furnish 

 nourishment to the bud until sustenance can be secured from 



101. — Urtder ground 'part of 'potato plant in mellow soil. 



newly foi-med rootlets, may produce one, occasionally more, strong 

 upright stems. A mosi interesting study of manifold reproduction 



may be made eve^i in the winter time by 



planting in a fertile soil a piece of potato 



containino; a sinorle eve. As soon as the 



rootlets begin to start, divide each eye 



and piece into two parts and replant. 



In a few days after the rootlets have 



again started, divide the two pieces into 



four and replant. This operation may be 



performed again and again,' until many 



plants suitable for transplanting in the 



open may be secured from a single eye. 



Demonstrate that the potato contains starch. This can be done 



by applying a drop of dilute iodine to a freshly cut surface of the 



tuber : the starch grains turn blued)lack. Five cents worth of iodine 



286 



102. — Piece of tuber for jjkmt 

 ing, hearing a single eye. 



