How Science Helps the Body 173 



and finally how these scourges of mankind 

 can be controlled by a little honest and in- 

 telligent cleanliness. 



Now step by step as this knowlege has 

 grown, it has been necessary to use the lower 

 animals in studying the action of these new- 

 found micro-organisms, and the ways to prevent 

 their ravages. These animal experiments are 

 always most carefully performed, anaesthetics 

 being used whenever necessary, by the hu- 

 mane and self-sacrificing devotees to the 

 advancement of knowledge. Without the free 

 and untrammelled use of the lower animals 

 for experimental purposes, children would 

 still be suffering and dying by thousands 

 from diphtheria each day, the world over, and 

 the doctors would be helpless to save them or 

 largely stop their sufferings. The pitiful victims 

 of cerebro-spinal meningitis would still face 

 a hopeless future. We should be back in the 

 old age of helplessness towards most of the 

 infectious maladies. 



It is well for us all to realize this, because a 

 number of persons, a part of whom are igno- 

 rant but well-meaning, a part ignorant and 



