PROBLEM 242 



269 



farm compare with those in a city? How can the unsanitary 

 environment of the farm be made sanitary? 



Conclusion. — 1. What steps should a large city take to obtain 

 and protect its water supply? 



2. What should be done with the sewage in the city in which 

 you Uve ? Why ? 



3. What other hygienic steps should a city take to protect its 

 citizens ? 



Problem 241 : Is typhoid a city or a country disease ? 



Observation. — ■ Make a graph from the following table ' to show 

 the relative death rate from typhoid in states having a large 

 urban population, and in states having a large rural population. 



Average Per 



Cent of Rural 



Population 



Average Typhoid 



Fever Death 



Rate per 



100,000 



Five states in whioh. the city population 



was more than 60 % of the total 

 Six states in which the city population 



was between 40 % and 60 % . . . 



Seven states in which the city population 



was between 30 % and 40 % . 

 Eight states in which the city population 



was between 20 % and 30 % . . . 

 Twelve states in which the city population 



was between 10 % and 20 % . 

 Twelve states or territories in which the 



city population was less than 10 % . . 



30 

 49 



67 

 75 

 87 

 95 



25 

 42 

 38 

 46 

 62 

 67 



Conclusion. — ^ Is typhoid a city or a country .disease? Why 

 is it so ? Look up diagram in your textbook. 



Problem 243 : What is the annual cost to JVew Yorh city of 

 some 'preventable diseases ? 



Materials. — Report of board of health. 



Method. — Using the board of health tables for the year 1910, 

 find the number of persons who die from each of the given prevent- 

 able diseases. Which are pajrticularljr children's diseases ? Fol- 

 lowing these directions, compute the annual cost in lives. 



' Modified from Allen's Civics and Health. 



