186 BOYS AND GIRLS IN BIOLOGY. 



The second annulosa, or ringed animal, that we studied 

 is the butterfly, which is called an insect. The word 

 insect means / cut into. I suppose the animals are thus 

 named, because their bodies look as though they were 

 cut into three parts. 



Mollusca comes from a word which means soft. 

 The animals placed under this division of the inverte- 

 brates have soft bodies like the mussel, the sample of 

 mollusca that we have studied. 



So remember that all animals without a backbone 

 are protozoa, or first animals ; ccelenterata, or hollow- 

 tube animals ; annuloida, or ring-like animals ; annu- 

 losa, or ring animals ; mollusca, or soft animals. 



And now all I can say of the future is that, if you 

 are pleased and interested in these studies, we may have 

 some talks about the vertebrates, or the animals with 

 a backbone, such as fish and birds, apes and boys. Per- 

 haps we may be able to prove that biology is not too 

 big a subject for boys and girls. 



THE END. 



