CONTENTS 



PAGE 



INTRODUCTION I 



PART I 

 THE BIOLOGICAL PROBLEM AND METHODS 



CHAPTER 



I. OUTLINE — BIOLOGICAL METHODS . . . .II 



II. PHYSICAL AND CHEMICAL METHODS — CRITICISMS 



AND DIFFICULTIES 23 



III. CHEMICAL AND PHYSICAL METHODS — LIMITATIONS — 

 RESULTS ACQUIRED — THEIR ROLE IN IMMUNITY 

 AND BACTERIOLOGY 37 



PART II 



CICATRIZATION OF WOUNDS AND 



TISSUE-CULTURE 



IV. A BIOLOGICAL PHENOMENON — TIME — CICATRIZATION 



OF WOUNDS — PRELIMINARY EXPERIMENTS . . 5 1 



V. CICATRIZATION OF WOUNDS (ll) — EXPERIMENTAL 



TECHNIQUE — CURVES — MATHEMATICAL STUDY . 66 



VI. INDEX OF CICATRIZATION — INFLUENCE OF THE AGE 

 OF THE PATIENT — INFLUENCE OF THE SIZE OF THE 

 WOUND 79 



VII. TISSUE-CULTURE IN VITRO ... . . .102 



PART III 



TIME 



VIII. TIME — DEFINITIONS — MEASUREMENTS . . ^ .125 



IX. THE TIME OF ORGANIZED BEINGS — THE CHEMICAL 



CLOCK 145 



INDEX OF NAMES 179 



xi 



