special requirements* Indeed it became more and more evident from 

 the impraoticaliility and inefficiency of such policies, that 

 efficient legislation against fungous diseases proves to be one of 

 the most difficult problems, the successful solution of which, let 

 it be understood in the beginning, is exclusively a matter of 

 national and international agreement. The great difficulty of 



devising practical and protective policies is evidently due to 



in 

 our own^,experience in this direction, rhen suggesting means 



likely to meet the special exigencies. The confidence that 

 matters would ultimately adjust themselves in the right way is 

 misplaced, at any rate in the mean time our faith in this respect 

 costs the nations incalculable sums of money. One of the 

 greatest drav;backs to success in legislation directed against the 

 spread of fungous pests, is that practically all different diseases 

 call for difiexent measures of control. It is almost impossible 

 to lay dovm hard and fast rules governing the control of diseases 

 of all kinds. 



The only practical means to obtain results suiting this pur- 

 pose of legislation would be co-operation of experts engaged in 

 this kind of y ork assisted by farmers, gardeners, fruitgrowers, 

 produce importers, and representatives of any other industries 

 affected b;/ such measures. Quite recently, I underF.tand, 

 measures dealing with legislation against fungouf^ diseases were 

 introduced before the House of Eeiresentatives in the United 

 States with the result that nurserymen and others whose industries 

 it was the desire to protect, voted unanimously against the pro~ 

 posal. Experience in enforcing many of the rules laid down in 

 existing Disease Acts has taught me that they do not meet with 



