CHAPTER XV 



PROBLEMS OF SANITATION AND PERSONAL 



BENEVOLENCE 



THE sanitation of cities and homes has come to be 

 one of the most important problems of human gov- 

 ernment. It is only recently that it has been con- 

 sidered with scientific 

 method and thorough- 

 ness, and that society 

 has addressed itself to 

 its solution with ade- 

 quate vigor. How is it in ant commues? 

 Their method of preserving the public 

 health is summed up in one word clean- 

 liness. 



Our treatment of the subject falls nat- 

 urally under the heads of personal clean- 

 liness, parental cleanliness, and public 

 cleanliness. Personal cleanliness with 

 every ant is a passion. 

 As much time is given Fig. 92 A THIRD LEG OF ANT, 



SHOWING HAIRS AND SPINES 



to cleansing the person USED IN PERSONAL CLEANING 

 as is required, and no 



work is so urgent as to interfere with that. Nature has 

 abundantly provided for the support of the habit which 

 she has implanted, by the gift of certain implements. 

 The legs (Fig. 92), which are clothed with hairs, bristles, 



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