TABLE OF CONTENTS. xix 



CHAPTER XXVI. 



PAGE 



CLASS MAMMALS 343 



Time. 3-5 periods. 



Objects of Chapters XIII-XXVI.To furnish the 

 student an outline of each of the more important 

 branches of the animal kingdom, so that he may 

 have a somewhat definite framework into which to 

 fit his own studies and observations; to give body 

 and unity and continuity to the practical exercises, 

 and to prevent an unbalanced notion of the animal 

 kingdom; to give, by means of the keys, practice in 

 the discriminative processes necessary to classify 

 even roughly some representatives of each group; 

 to display the progressive character of the animal 

 series and thus make concrete the student's notion 

 of evolution and strengthen his confidence in it. 



CHAPTER XXVII. 



MAN . 360 



Objects. To enable the student to think of man in 

 terms of the lower animals, as of similar nature and 

 subject to the same conditions that other animals 

 experience; to make clear that we get light on hu- 

 man behavior by a study of zoology; to force recog- 

 nition of the fact that man can no more defy the 

 laws of his nature with impunity than can the lower 

 animals, even though he may postpone the penalty 

 for a time. 

 Time. 2-3 periods. 



CHAPTER XXVIII. 



DISTRIBUTION OF ANIMALS ON THE EARTH 374 



Objects. To extend and to organize the pupil's 

 ideas in respect to the various factors that deter- 

 mine where animals are found and to the effect the 



