CHILDREN'S GARDENS 



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remove it quickly, so as to surprise the insects and 

 worms which have gathered there. 



This is one of the great lessons, with a simple illus- 

 tration, that much disease and many insect pests thrive 

 in semi-darkness, and then attention can be called to 

 the fact that many diseases and insect pests of men 



Photo by Brown Bros. 



Teaching sanitation with lettuce covered to shut off two-thirds 

 of light and air for ten days 



come in the darkness. The doctors tell us that almost 

 all of the germs of our serious diseases will be killed 

 by sunlight, and we know that many of the house- 

 hold insects that bother us are liveliest in the dark. 



It will be interesting to give up one observation 

 plot entirely to experimenting with plants to learn 

 how much space they need. Mark the plot with fur- 

 rows twelve inches apart. Use a quick-growing rad- 

 ish or turnip. Plant one row very closely together, 



