REVIEW 299 



oped brain, but the senses are much inferior to those of mammals 

 in general. The sense of touch is limited, since the skin is covered 

 with feathers, the quills of which end in small bulbs or hollows 

 under the skin. The sense of smell is not very keen, while the 

 sense of taste varies considerably in individuals. All fowls reject 

 things which are objectionable to them; probably, however, this 

 is as much from sight as from taste ; but it is clearly demonstrated 

 that they have a sense of taste quite well developed, since they 

 show a partiality for certain kinds of feed, whether there is any 

 great difference in the physical nature of the feeds or not. Palata- 

 bility is an important consideration in poultry feeding. The sense 

 of sight is very highly developed as well as the sense of hearing. 



REVIEW. 



1. Give a physiological description of the domestic fowl. 



2. Name the leading parts of the bird's skeleton. 



3. Discuss four points in which the bird's skeleton differs from that of 



mammals. 



4. Discuss briefly or define cells, tissues, organs, and systems. 



5. Name several tissues; several organs; several systems. 



6. What are the functions of the muscular system? 



7. Locate and give the functions of the various organs of the digestive system. 



8. Give two uses for the circulation of blood through the bird. 



9. How does the plan of circulation compare with that in the human body? 



Describe it. 



10. Locate and give the use of the respiratory system. 



11. Discuss the special senses in fowls. 



Reference. — Ligaments of the Oviduct of the Domestic Fowl, by M. R. 

 Curtis, Maine Bulletin 176. 



