VERTEBRATES 



405 



queen takes about half the colony and goes off to form 

 another swarm. 



The wax is secreted from glands in the abdomens of the 

 workers and with this the bees build the comb. Each cell 

 is hexagonal in cross section and 

 the comb is so constructed that 

 the least possible amount of wax 

 will inclose the greatest possible 

 amount of honey. The nectar 

 at the bases of flowers supplies 

 the bee with the material from 

 which it makes the honey. It is 

 in seeking for this that the bee 

 visits so many flowers and scrapes 

 the pollen on to the different 

 parts of its body, to be borne 

 away to fertilize other flowers 

 which it enters. Such an inter- 

 esting animal and so exceedingly 

 useful is the bee that hundreds 

 of books have been written about 

 it, more than about any other 

 domestic animal. Some of these 

 should be read for further in- 

 formation concerning this most 

 instructive animal. 



Vertebrates. Experiment 134. 

 If possible, secure the skeleton of 

 some vertebrate animal; preferably A HuMAN SKELETON 



man. Notice how the bones are 



_ . . . . . Notice how the bones are ar- 



fitted to each other and how the ranged to protect the delicate 



joints are arranged to allow move- organs. ; 



