TABLE OF CONTENTS. Xvii 



CHAPTER XL 



PAGE 



THE *LATER DIFFERENTIATION OF THE ANIMAL BODY. 113 

 Objects. To furnish material for reading or refer- 

 ence, introducing the student to the division of 

 labor and differentiation of structure that takes 

 place in the minute units the cells and tissues 

 just as truly as in the larger organs. 

 Time. 0-4 periods 



CHAPTER XII. 



THE RELATIONS OF THE INDIVIDUAL TO ITS SURROUND- 

 INGS 124 



Objects. To make clear to the student what are the 

 major facts that enter into successful animal life, 

 and some of the more important ways in which 

 species of animals have succeeded in relating them- 

 selves to one another and to the inorganic condi- 

 tions ; to organize and extend the more or less scat- 

 tered information the student may have collected 

 by his own observation of animal adaptations; to 

 send the student to the observation of animals in 

 nature with a more intelligent interest. 

 Time. 5-8 periods. 



CHAPTER XIII. 



PROTOZOA 154 



Time. 2-5 periods. 



CHAPTER XIV. 



PORIFERA 163 



Time. 12 periods. 



CHAPTER XV. 



CCELENTERATA 17 1 



Time. 2-4 periods. 



