NATATORES. 447 



enne T. ? Whence does the Noody T. derive its name ? What is said of 

 it ? What of the Silvery T. ? How many sp. of the Three-toed Gulls? 

 What is said of the Great Black Backed G. ? Of the Common G. ? In 

 what latitude do the Jagers breed? What characters are given? How 

 does the Arctic Jager obtain its food ? Upon what mollusk do they feed ? 

 What else is said of it ? 



What is the 6th FAMILY? How is it characterized? Do they Swim or 

 dive ? What is said of their powers of flight ? In what places do they 

 build their nests ? What is said of the eggs ? Are the sp. numerous ? 

 Into what groups are they arranged? What is the size of the TRUE PELI- 

 CANS ? What use do they make of their pouch ? What is Audubon's opin- 

 ion relative to this subject? For what have the Pelicans been celebrated? 

 How have they been depicted? Has this been done with good reason ? 

 What is said of the Common White P. ? Of the Brown P. ? What gen. 

 includes the Cormorants ? How do they differ from others of the family ? 

 What bone is peculiar to the C. ? What is said of the Common C. ? Of 

 the Green C. or Shag ? Which is the most beautiful sp. in the U. S. ? What 

 gen. includes the DARTERS or SNAKE BIRDS ? What suggested the name ? What 

 is said of the Anhinga or American Snake B. ? What group do the FRIG- 

 ATE BIRDS resemble? How differ from them? Of what fish are they par- 

 ticularly fond? What other fish do they persecute? What does Ray say 

 of them ? Which is the only gen. and sp. ? In what respects do the Gan- 

 nets differ from the Frigate B. ? What name is sometimes given to the 

 Common G. of Europe ? In what other regions is it found? What is said 

 of the A. Gannet? Of the Booby? How are the TROPIC BIRDS distin- 

 guished and characterised ? What is said of the Common Tropic B. ? 



GENERAL EXERCISE ON THE CHART. 



What is the first division of Birds on the Chart ? Into how many orders 

 are the LAND BIRDS arranged? Name each, giving some peculiarity or 

 characteristic. . Name the SUB-ORDERS, and the forms or peculiarities of the 

 bills upon which the divisions of Perching birds are based. Name and trace 

 the families in each order. Which order is most numerous ? Which the 

 least numerous ? Which contain the largest birds? Which the smallest ? 

 Which are the most beautiful ? Which the most ordinary ? How are the 

 WATER BIRDS divided? What kind of feet have they? Which wade? 

 Which swim ? What is the form of each ? Which the most awkward ? 

 Which most useful ? How do the bills vary in all the different orders ? 

 How the toes, wings, legs and necks? 



~jf 



19 



