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NATURE 



\Oct. 22, 1874 



prosperity ; and though in the long run perhaps we come xpense of interests to which speedy action and promp 

 out of the difficulty in a manner not altogether unsatis- methodical treatment are the only means of preservation- 

 factory still such result can only be obtained at the j But in France and in most of the continental countries of 



Map showing the spread of Phylloxeia from 1865 10 1871. 



Europe, the State, or at least important corporate bodies, 

 come quickly to the aid of science, which, thus subsidisecl 

 and encouraged, can penetrate far deeper and can have a 

 freer play for its researches. As a result, in the present 



case we have the studies of men of science on this subject 

 of altogether national importance, studies which, if we 

 mistake not, should go far to direct the efforts of the 

 nation into the right course of treatment for the extirpa- 



