594 CHONDROPTERYGII. 



From what part of the Sturgeon is isinglass obtained, and how is it pre 

 pared ? What sp. of Sturgeon are mentioned and what is said of them ? 

 What is the 2nd ORDER of CARTILAGINOUS FISHES ? How is it character 

 ized? What is the 34th FAMILY? What is said of their size, voracity, 

 &c.? What is said of the White Shark? Of the Thresher S.? What 

 other sp. are mentioned? What is said of the Spiny Dog-fish and the 

 Spotted Dog-fish ? Of the Angel-fish and Saw-fish ? What is the 35th 

 FAMILY? Give their characters? What sp. of RAYS PROPER are mentioned? 

 What is said of the EAGLE RAYS ? Of the Electric Ray ? What is the 3d 

 ORDER of CARTILAGINOUS FISHES? What peculiarity gives name to the 

 order? What is the 36th FAMILY? What is said of this FAMILY? What 

 of the Sea Lamprey? What of the Mud Lamprey? Of the Myxinoids or 

 Glutinous Hags? What is the 4th ORDER of CARTILAGINOUS FISHES? How 

 is the term sometimes employed? What Family does it include? How 

 does Miiller rank it? What is it called by Yarrell ? Describe this fish. 



Name and trace from the Chart some of the largest fish, giving a sketch 

 of each from the book. Which is the largest of the Mackerel Family? 

 Which next? Which is the largest of the Flat-fishes? In what do they 

 differ from all other fish? Which of the Placoids is the largest? How do 

 the caudal fins of this order differ from those of other orders ? What fam 

 ilies present the most singular forms ? Which are nearly round ? Which 

 long and slender? Which three or four sided? Describe the Sun-fish and 

 Chimaera from the Chart. Which fish crawl upon land or climb trees, and 

 in what orders are they found 



