GERMINATION OF SEEDS 65 



Set the flowerpots in a locality favorable for growth 

 and water them well. From day to day observe results. 

 Which come up earliest? Which had most work to do in 

 order to come up? Which are the larger seeds? Is there 

 any relation between size of seeds and depth of planting ? 

 Of size to the early seedling? What sort of seeds does the 

 farmer sow? What ones are planted? Probable reason 

 for this? 



The Pocket Garden 



It is often desirable to have a means of constant observa- 

 tion on seedlings during germination. This is accomplished 

 by what is known as a pocket garden or pocket germinator. 



Procure two pieces of glass of any convenient size. Lay 

 one on the table and cover it with four or five layers of 

 blotting paper or flannel. Colored paper or cloth is pref- 

 erable, since the delicate growths show most clearly on a 

 dark background. 



Now lay four thin strips of wood along the edges. Cigar 

 box covers are of about the right thickness. 



Moisten the blotting paper or cloth and sprinkle over it 

 a few small seeds, such as radish, mustard, oats, or canary 

 seed. 



Cover the top with the other glass and bind the whole 

 together with strips of bicycle tape or with common cord. 



Many observations can be made on seedlings germinated 

 in this way. 



49. RESPIRATION 



Object. To prove that germinating seeds give off carbon 

 dioxide. 



Apparatus. As in Figure 19. 

 EXP. EOT. 5 



