54 MANDAI< OF NATURB STUDY. 



when the seed is planted, the sun helps the little 

 plantlet in the seed to change the starch back again 

 to sugar, in which form it readily becomes soluble 

 in water and hence food for the baby plant. What 

 are our baby plants, radish, onion and lettuce that 

 we planted a week or two ago now doing? 



To show the influence of the sun in this boarding 

 house, or in the formation of "leaf green," place 

 a plant in a dark place for a few days. What eflfect 

 upon the color ? Upon growth ? Do all the help- 

 ers in the seed factory get fed as well as when the 

 plant was in the light ? How can you tell ? What 

 change takes place in the growth of tree or plant 

 after the leaves have fallen in autumn, or in ex- 

 tremely dry xweather? When caterpillars have 

 eaten all the lungs and stomach of a plant, what 

 change do you observe in the growth of the plant ? 

 What change in growth of seeds ? Why ? Why 

 should the onion beds, radisTi beds, and lettuce 

 beds be kept clean from weeds and insects ? Why 

 do gardners "thin out" their vegetables ? When 

 are they too thick ? Point out the leaf, stem and 

 root of the radish, onion and lettuce as you did the 

 other plants. Compare market values of these 

 plants. 



B. — Animal Life. 



1. Lessons on Snake ^ Fish^ Frog^ etc. — Collect a 

 garter snake, a frog and a fish, keep them alive in 



