358 GENERAL SCIENCE 



on food which has been partially digested in their own 

 stomachs. After a few days the grub is given a supply 

 of food and sealed in a cell by the workers. In about two 

 weeks it breaks out as an adult worker. 



When a new queen is to be produced, the young larva 

 is fed during the whole pupal period upon the special 

 food known as bee jelly and grows to a larger size than 

 the workers. When a young queen appears, the workers 

 usually divide. Some of them remain in the hive with the 

 new queen, while others follow the old queen out of the 

 hive. If the old queen alights, they settle around her, 

 forming a mass of bees. This is called swarming. To 

 prevent them from leaving it is necessary to provide 

 new quarters for them. 



The queen bee may live for several years, but the 

 workers live but a few months. The drones are driven 

 out or killed by the workers. If bees are properly cared 

 for and provided with a source of food, they will produce 

 enough honey to be quite profitable. Since they visit 

 so many flowers, they are also valuable as carriers of 

 pollen. 



Fishes. All of the animals we have studied thus far 

 have either had no skeleton or have had an exterior 

 skeleton. They are called invertebrates. There are five 

 classes of animals having flexible vertebral columns or 

 backbones. They are fishes, amphibians, reptiles, birds, 

 and mammals. Collectively these five classes are called 

 vertebrates. 



The fish is an animal that lives in the water. Most 

 fish are protected by platelike scales, which overlap each 

 other in such a way as to leave the body flexible. The 

 tail fin of a fish is the principal organ of motion, although 

 the other fins all have something to do. The fin on the 



