A SEED AND ITS GROWTH 



53 



hardier (that is, able to sprout in cooler weather) than 

 others? Which will the gardener plant earliest in the 

 spring ? 



Do not throw away all the plants sprouted in these ex- 

 periments. Some of them will be of use in later ones. 



Fig. 32. — Seedlings of corn and beans climbing to the surface from the 

 depths of one, two, three, and five inches. Which depth is best? 



A good thing to know is the proper depth at which to plant 

 seed. To begin with, let us see whether there is any advan- 

 tage in one depth over another. Take any wide-mouthed 

 bottle, and put in an inch of wet sand or loam. Then put in 

 a seed of corn close to the glass, and put in a half inch more 

 of the sand or loam. Set in another seed, touching the glass, 



