PREFACE 7 



with the difficulty that people think he is trying 

 to produce another speculation in the hope that 

 it may ultimately turn out to be correct, or that 

 he may increase his practice. As a matter of fact, 

 we believe that the cancer problem is only a detail 

 in the solution of the problem of the cause and 

 control of cell-reproduction or rather of the 

 phenomenon of the reproduction of living matter. 

 The person who solves this problem will, I think, 

 have a far greater field in front of him than the 

 mere practice of a " cure for cancer." Besides, 

 we none of us practise. 



This suspicion, coupled I think with the dis- 

 claimer, has led to the publication of our work 

 in its present form. "When our experiments 

 merely dealt with problems concerning well- 

 known cell phenomena we met with no difficulty 

 in getting the results published in scientific and 

 medical journals ; but now editors of scientific 

 journals appear to be less inclined to insert our 

 papers. After careful consideration, therefore, I 

 think that it will be better to continue, as I have 

 always meant to continue, to take all the responsi- 

 bility, and to print the work independently for 

 ourselves. We must publish our experiments, 

 because others may be in fact, we know that 

 they are working on similar lines ; and nothing 

 is gained by clashing in research. 



Judging by the published reviews and the 

 criticisms which I have received both in England 

 and America, the question to be answered is 

 whether my interpretation of the facts seen by 

 the new method of in-vitro staining is correct 

 pr not ; the main point turns on whether the 



