- 2 - 
schistosomes, even if this promised to control schistosomiasis? 
Recombinant DNA research has enormous fundamental, economic, and 
humanitarian possibilities. It would be a major tragedy for the Uni- 
ted States if zealots such as Rifkin are permitted to influence re- 
search policy. 
I hope his proposed amendments will be quickly disposed of. 
Sincerely, 
James F. Crow 
xc: Dr. Ruth Kirschstein 
[ 498 ] 
