CONTENTS 



PAOK 



PREFACE 5 



A FURTHER INVESTIGATION OF THE CHEMICAL SUBSTANCES 

 WHICH CAUSE THE CELL-DIVISION OF HUMAN 

 LYMPHOCYTES .19 



II 



A METHOD OF MAKING PERMANENT FIXED FILMS OF 

 HUMAN LYMPHOCYTES IN WHICH DIVISION FIGURES 

 OR OTHER PHENOMENA HAVE BEEN INDUCED BY 

 CHEMICAL AGENTS WITH THE " JELLY METHOD " . 34 



III 



A METHOD BY WHICH CELL-DIVISION CAN BE INDUCED 

 IN HUMAN LYMPHOCYTES IN VITRO WHILE THE 

 CELLS ARE FLOATING IN A SOLUTION WHICH 

 CONTAINS THE NECESSARY CHEMICAL AGENTS . 39 



IV 



THE GASWORKS PITCH INDUSTRIES AND CANCER 42 



THE ACTION OF " AUXETICS " ON ERYTHROCYTES . . 48 



15 



