THE PROPER DEPTH OF PLANTING. 



117 



a. Sprinkle about an inch of loam in the bottom of 

 the bottle and place one seed of each 

 of four or five different kinds on 

 the surface of the loam, next to the 

 glass so that they can be seen when 

 they are covered with loam. Then 

 sprinkle about an inch more of loam 

 and repeat with the same kinds of 

 seeds as were used on the first layer. 

 Repeat the process until the bottle is 

 full. Other pupils may use different 

 seeds. Water the loam so that it is 

 moist but not wet. Cover the bot- 

 tle, or bottles, with black cloth, so as 

 to shut out the light from the seeds, 

 keep in a warm place, and examine 

 once a day. Do not let the sun shine 

 upon the bottles. 



b. When the seeds begin to sprout 

 make drawings of the way in which 

 .the plant comes out of the seed and 

 the way in which the root turns. Make drawings of 

 what happens to those seeds which were planted too 

 deeply. You will find that the seeds very near the sur- 

 face may grow all right, but you must remember that 

 the sun did not shine upon the loam. Measure the depth 

 which you find is proper for your seeds, and obtain from 

 the other pupils their best results. 



Cut supplied through United States Department of Agriculture. 



