A BRIEF SUMMARY OF THE PROBLEM 173 



milk supply of the average American city. The 

 careful reader will have observed that the perils 

 are practically all hidden ones. It is impossible 

 to tell from the appearance of milk, or from its taste, 

 whether it has the deadly germs of typhoid in it, 

 tubercle bacilli, or other pathogenic germs, or whether 

 it has been "doctored" by the use of dangerous 

 chemicals. Science alone can reveal the dangers 

 lurking in the milk can or bottle. The average man 

 is helpless: to test milk chemically and bacterio- 

 logically is a long, difficult, and expensive process, 

 beyond the powers of the layman. A formidable 

 list of dangers has been compiled by science, and now 

 comes the questioning of the layman : — 



"0 Star-eyed Science 1 hast thou wandered there, 

 To waft us home the message of despair? " 



