PLANT STUDY 



The Seed. The "lunch" for the seedHng. The Cotyle- 

 dons. Com. Squash. Bean and Pea. 



The Leaf. Its Use. Starch factory run by sunshine 

 power. 



The Stem. Its use. The petiole. 



Experiments to show the relation of the plant to soil, water, 

 and light. 



The Flower. Its use. The use of sepals, petals. The 

 parts of the pistil : seed box, style, and stigma and the use of 

 each. The parts of the stamen: anther, filament, and their 

 uses. Pollen and ovules. 



Cross-pollination and its use in Nature-Study 



The advantage of two parents in the struggle for existence. 

 How plants meet this problem. Wind pollination. The 

 advantage of insect pollen carriers. 



The partnership of flowers and insects, the advantages to 

 both parties. 



Inducements for insects to visit flowers. Pollen and 

 nectar. 



Advertisements: color, fragrance. 



Conveniences offered: alighting place and guide lines. 



Devices to secure pollination by insects: Nectary is 

 placed so that to reach it the insect must come in contact with 

 pollen and stigma. Devices for avoiding self-pollination; 

 the pink, composites, clover, etc. Devices to compel cross- 

 pollination: the nasturtium, bluets, sage, orchids, pump- 

 kins, willows, etc. 



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