9 6 



AGRICULTURE FOR BEGINNERS 



dip a match or a pin into the blue mold on a lemon, and 



draw the match across the moist bread. You will thus 



plant the spores in a row ; 

 they are so small that 

 perhaps you may not see 

 any of them. Place the 

 bread in a damp place 

 for a few days and watch 

 it. Does the mold grow 

 where you planted it ? 

 Does it grow elsewhere ? 

 This experiment should 

 prove to you that molds 

 are living things and can 



be planted. If you find spots elsewhere, you must remember 



that these spores are very small and light and were probably 



blown about when 



you made your sow- 

 ing. When you 



touch the moldy 



portion of a dry 



lemon, you see a 



cloud of dust rise. 



This dust is made 



of million s of 



FIG. 83. MAGNIFIED ROSE MILDEW 



spores. 



If you plant 

 many other kinds 

 of mold, you will 

 find that the molds "come true" to the kind that is 

 planted ; that like produces like even among molds. 



FIG. 84. A MILDEWED ROSE 



