PERSONAL AND CIVIC HYGIENE 323 



7. Suppose a person with tuberculosis spits in public places. 

 What is quite certain to be the result ? 



8. Explain why it is criminally careless for any one to spit in 

 public places, on walks, etc. Note. Pocket waterproof sputum 

 cups are now manufac- 

 tured and should be used 



by all consumptives. 



They may then be burned 



or disinfected by carbolic ^TJ 



acid or lysol. Under no 



circumstances should the ^MIH^L ^f^SC'^i^E^ 



sputum be allowed to dry 



up. Why ? 



9. How do you suppose 

 all the disease germs that 

 are in dust originally got 

 there, such as of consump- 

 tion, pneumonia, catarrh, 



meningitis, measles, in- FIG. 82. Germs of tuberculosis from the 



fluenza, and scarlet fever ? spit of a """"""P*- 



Is there much spitting in your town or city ? Where, if any ? 



10. Since dust about human habitations must inevitably con- 

 tain germs un,der present conditions, what are some of the best 

 means of keeping them out of our bodies ? Note. The dust 

 in public buildings may be kept down by using sawdust damp- 

 ened with water, to which has been added -j- pint of kerosene 

 and a tablespoonful of formalin. Why add formalin ? 



11. Why should feather dusters not be used in dusting? 

 Note. A cloth dampened with water containing a little kero- 

 sene makes a most excellent duster. Why use kerosene? 



12. Why may carpets be detrimental to health ? 



13. How may the leaves and covers of a book become car- 

 riers of the germs of some diseases ? W T hy should all publicly 

 used books be at least covered ? 



14. May germs enter the body through breaks in the skin ? 

 What causes the soreness of any ordinary cut ? 



