entr' acte 213 



Here is another difficulty which handicaps scientific prog- 

 ress: the very performance of the decisive experiments is 

 so meticulous that few can repeat them. It would not be 

 correct to say that Russia is the only country where these 

 experiments on mitogenetic rays have ever been carried out 

 successfully but probably nowhere else have scientists yet 

 acquired that special skill and experience which is indis- 

 pensable for the proper handling of these problems. Evi- 

 dently the exchange of ideas and experiences at our inter- 

 national scientific congresses does not suffice to remove 

 barriers which obstruct progress. A friend of science looks 

 forward to a future of better communication between the 

 students of nature. 



