39 8 SCIENCE PROGRESS 



is one which is often greatly needed in our branch of science. 

 In spite of the inspiring examples of such men as Pettenrofer 

 or Paul Bert or Parkes, we seem constantly in danger of 

 forgetting it. We should progress hand in hand with the 

 development of each industry, and be ever ready to help 

 the engineer or manufacturer. It is only by doing this on 

 the one hand, and by keeping in close and living touch with 

 physiology and pathology on the other, that industrial hygiene 

 can properly fulfil the very important duties which human 

 progress has assigned to it. 



