PREFACE 



I HAVE long felt that in spite of the many books 

 published which deal with Sex, there is none that 

 can be given to young people with complete confi- 

 dence. They are either too learned ; or, if they avoid 

 technicalities, they are too barren of real informa- 

 tion. I have tried to escape both these pitfalls. 

 The material of the book is based on the works of 

 well-known authorities, of which a list is given at 

 the end of the book. 



I cannot but make special mention of the influence 

 and stimulation of my husband's work, without which 

 this book would not have been written. 



F. II. 



MANCHESTER, 



March, 1918 



