CONTENTS xi 



CHAPTER XXII 



PAGE 



NATURE AND NURTURE ..... . 410 



CHAPTER XXIII 



PHYSICAL DETERIORATION AND MICROBIC DISEASE . . 436 



CHAPTER XXIV 



INTEMPERANCE AND INSANITY .... . 456 



CHAPTER XXV 

 EDUCATION ......... 477 



APPENDIX . 517 



GLOSSARY . . . - 535 



INDEX ... ... . 539 



