60 CLASS-BOOK OF ZOOLOGY. 



§ 223. Describe the Great Ant-eater. 

 § 224. How does he walk and defend himself? 

 § 225. Why can he not do any harm to man? 

 § 226. Describe the Two-toed Ant-eater. 

 § 227. Describe the Duck-bill. 



§ 228. What do you know of its abode, food, and weapon? 

 § 229. Describe the Scaly Lizard. 



§ 230. Where is it found, and how does it defend itself? 

 § 231. Of what does its food consist, and what is its use? 

 § 232. Describe the Armadillo. 

 § 233. What is its native country and its use ? 

 § 234. Why are Ant-eaters, Scaly Lizards, and Armadilloes a 

 blessing to tropical countries ? 



SECTION XII. 



9 th Order — Fish-like Mammalia : (Cetacea.) 



§ 235. Fish-like Mammalia are those which live in 

 the water ; and which, instead of hind feet, have a 

 horizontal caudal fin, and fore-feet degenerated into fin- 

 like limbs. But though the Fish-like Mammalia per- 

 fectly resemble fishes, they are distinguished from these 

 by their internal construction, as they breathe with lungs, 

 and not with gills ; and they are warm-blooded and vivip- 

 arous. To this Order belong the Narwhal, the Whale, 

 the Cachelot, and the Dolphin. 



\ 236. The Narwhal (Monodon Monocerus) is about 

 sixteen feet long, exclusive of the tusk, which, projecting 

 from the upper jaw, is spiral and hollow, and ten feet long. 

 Its general color is blackish-gray, variegated with numer- 

 ous dark spots on the back and sides, and white on the 

 belly. The Narwhal is an inhabitant of the Arctic Seas, 

 where numerous herds are seen together, and feeds on 

 shellfish and other fishes ; it is hunted for its blubber, 

 which is from two to three inches thick, and lies imme- 

 diately beneath the skin. The flesh is eaten by the 

 Greenlanders and Esquimaux ; the oil is burned in their 

 lamps, the intestines are wrought into lines, and the tuska 

 used for spears. 



