THE HORMONES IN HUMAN REPRODUCTION 



the main outlines of these complex physiological patterns. 

 We have seen the great advance of knowledge that has taken 

 place in less than fifty years, by the efforts of faithful labori- 

 ous men who worked in peace and quiet, giving their lives to 

 the understanding and improvement of life. When I wrote 

 these closing words, the guns were sounding all over the world. 

 The scientists were dropping their instruments, or turning 

 them perforce to the uses of death and wastage. But life goes 

 on nevertheless, and the problems of life will be studied until 

 the day comes we all dream of, when mankind may everjrwhere 

 seek the truth undaunted by fear of war and oppression. In 

 that day we shall gather the fruits of our labor. The childless 

 wife, the ailing girl, the boy deprived of his birthright of sex 

 by some failure of Nature's process, will call and not in vain 

 for the help that science can bring them, and man shall under- 

 stand at last the miracle of his birth. 



