16. HOW SEEDS " COME UP." 



Illustrative material: Four glass jars, garden soil, and seeds 

 of wheat, radish, pea and bean. 



Planting the Seeds. Figure 32 shows four fruit jars, 

 each of which contains a different kind of plant. About 

 two inches in depth of moist garden soil was put into each 

 jar. Ten kernels of wheat were then placed on the soil 

 in jar No. i, ten seeds of radish in jar No. 2, ten seeds 

 of pea in jar No. 3, and ten seeds of navy bean in jar 

 No. 4. The seeds in all the jars were then covered about 



FIG. 32. Experiment with seeds. 



an inch deep with moist soil, after which the jars were 

 closed and set in a warm room. 



Wheat and Radish Plantlets The seeds have now 

 germinated, and the plantlets have just come up, that 

 is, they have just appeared above the surface of the soil. 

 We may see that the plantlets are acting quite differently 

 in the different jars. In jar No. I, the blades of wheat 



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