6 ELEMENTARY ZOOLOGY. 



he may make for himself in the field and laboratory; 

 2, statements in other texts which may be available to 

 him as books of reference; and 3, the teacher's fund of 

 information. The latter should be used chiefly to secure 

 a wise use of i and 2. 



Make, early in the course, a list of all the reference 

 books on Zoology which may be available to you. Each 

 book should be examined with some care. Get an in- 

 telligent notion of the kind of contribution it makes to 

 the subject, and make for your own use some notes on 

 the character of the books. For example: 



i. Parker and Haswell. Text-book of Zoology, 1897. 

 Two vols. A general text-book, well illustrated; deals 

 largely with structure, and discusses the various animals 

 under their appropriate phyla, beginning with the simplest. 

 Has chapters on distribution, philosophy of Zoology, and 

 history of Zoology at the end of the second volume. 



Do not neglect in this exercise the government publi- 

 cations. Many of these deal with the animals that are 

 helpful or hurtful to human welfare. 



7. Special Library Topics. Compare the division of 

 Zoology given in this text with two or three other treat- 

 ments which you may find in the reference texts. What 

 are the chief points of similarity and of difference between 

 these subdivisions and the one given you above? Make 

 a different subdivision of your own. 



In which of these departments of Zoology do you 

 think you will be most interested? Why? 



8. Summary. 



I. The natural sciences embrace: 



A. The sciences of inanimate things: 

 Astronomy, 



