PROBLEM 249 277 



NOTE. Immunity is usually meant when the body develops certain substances 

 in the blood known as antibodies. These substances seem to give to the body the 

 power to resist the work of germs that enter it. Natural immunity is only possible 

 when the bodily condition is good. 



Of what use to the body in this respect would be good food, rest, 

 sleep, and moderate exercise ? Take each factor separately in your 

 discussion. 



What might the colorless corpuscles do to help in this gaining of 

 immunity ? 



NOTE. Artificial immunity to certain diseases is brought about in the body by 

 the introduction of antitoxins into the body. These substances fight the effects of 

 the toxins formed in the body by the bacteria of certain diseases. Diphtheria is 

 one disease so fought. See your local board of health reports for a statement of 

 the preparation and distribution of this antitoxin. 



Do you know of any diseases that are fought successfully by 

 antitoxins? (Read Civic Biology, pages 390-393.) What great 

 names are connected with the antitoxin treatment of disease? 

 (See Civic Biology, pages 391, 402, etc.) How are antitoxins ad- 

 ministered? Why in this manner? Look up the subject of 

 vaccination in Civic Biology, pages 157 and 391. Who discovered 

 this method of treatment of disease? To what diseases is it 

 applied? Are there any other artificial means of developing 

 immunity in the human body ? 



Conclusion. Write a short composition discussing all the 

 ways of developing immunity in the human body. 



General Conclusion. 1. What are the functions of the 

 board of health in any city? 



2. How may I cooperate with them in their work for the com- 

 mon welfare? 



3. How may I develop immunity? 



Problem 249 : First aid in the home. A summary of what 

 to do and' how to do it. 



THE FIRST-AID EMERGENCY MEDICINE CHEST 



Every family should have the following materials in the medicine 

 cabinet out of reach of young children : 

 Alcohol, small bottle. 



