Cradle-Cells. 139 



The workers also take care of the eggs and 

 the young bees, but do not generally lay any 

 eggs themselves; only the queen does that. 



They make wax, build comb, and keep 

 'the hive clean, carrying out dead bees, or 

 anything that does not belong in it. 



No doubt they watch at the door, too. 

 For bees keep sentinels always on guard 

 to see that thieves and robbers do not 

 come in and steal their honey. 



If you knock on a hive, the sentinels 

 will fly out to see what is the matter. 



In a few days the young bees leave the 

 home work to the newly hatched, and go 

 forth to gather honey, and pollen, and 

 bee-glue. 



You ought to know that bee-glue is 

 called propolis, — a word that means "before 

 the city," — and it is so named, because 

 the bees use it to build fortifications in 

 time of war. 



Certain moths attack bee-hives by crawl- 

 ing in and laying their eggs in the corners. 



