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 8&quot;wim 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 

 lease 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 varj in all the different orders ? 

 How the toes, wings, legs and necks? 



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