106 THE MENDEL JOURNAL 



up in an environment which includes the tubercle 

 baciihis, and they will become consumptive. If 

 the already affected members of the family be cured 

 or removed, the children will no doubt, grow 

 up with their predisposition unaffected, but they will 

 stand a much better chance of not meeting the 

 tubercle bacillus in effective numbers, and will there- 

 fore, for the most part, escape. It is in this way that 

 tuberculosis is being eradicated. 



Enough has been said to show that by the 

 conscious efforts of the community, changes of 

 environment may be produced which will per- 

 manently affect society. 1 need not labour the point. 

 I am defending the poj^ular cause. Perhaps Mr. 

 Mudge must not be taken too seriously when 

 attacking the efforts of philanthropists and others ; 

 his business is to show, not so much that we are 

 doing wrong in curing the sick, etc., as that we 

 are not doing enough to check the multiplication of 

 our criminal and worthless classes. And in this 1 

 am entirely at one with him. 



