EXERCISE 22 



Problem. What is the relation between water and the sprouting of seeds ? 



What to use. Any large seeds (bean, pea, maize) ; several vessels of the same kind (bottles, tin 

 cans, cups) ; water. 



What to do. Arrange a series of five vessels, each vessel containing a different quantity of water ; 

 use seeds of the same kind. Such a series may be made by supplying equal numbers of seeds (ten or 

 a dozen) with varying quantities of water for example, no water at all ; one thimbleful or teaspoon- 

 f ul ; two ; four ; etc. The seeds in the last vessel of the series should be placed in water an inch or 

 more deep. Set all together in a safe place. 



Record. At intervals of about twenty-four hours record the condition of the seeds in words or picture. 



Conclusion. What do the results show as to the relation between water and sprouting ? 



Questions. 1. How can ycu tell that it was not the air that made some seeds sprout faster than 

 others ? 



2. How can you tell that it was not the temperature that made some seeds sprout faster than 

 others ? 



3. How can you tell that it was not the light that made some seeds sprout faster than others ? 



4. Plan an experiment that would answer this question. 



5. How can you tell that the sprouting was not merely the soaking up of water ? 



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