ECONOMIC CONSIDERATIONS 49 



recorded, would furnish evidence of losses of equal or 

 even greater magnitude. I have been informed that 

 sometimes ^200 is lost through disease in a single 

 tomato-house in Guernsey. 



It is in new countries, where cultivators of plants are 

 comparatively free from the trammels of prejudice, and 

 do not everlastingly confront you with the statement 

 that their forefathers did not have recourse to remedial 

 measures for the prevention of disease, that we look for 

 corroboration or refutation of the supposed efficacy of 

 the means advocated for arresting the progress of plant 

 diseases. 



For information on this point we naturally turn to 

 the United States, where the subject has been more 

 thoroughly and universally investigated not in a rule-of- 

 thumb manner by highly qualified scientific men, located 

 in every part of the country, for a longer period of time 

 than in any other country in the world. The fact that 

 spraying plants for prevention of disease is now univer- 

 sally recognised and practised in the United States, proves 

 that the State did not commit a mistake in affording 

 every facility for the development and continuation of 

 such research. 



The following extract is from a report by Professor 

 B. T. Galloway, Chief of the Division of Vegetable 

 Pathology, U.S. Department of Agriculture : 



' Mr. D. M. Wyngate has a large vineyard near Marl- 

 borough, New York, and at my request has furnished a 

 careful estimate of the profit derived the present season 

 from treatments suggested by this Division. His vine- 

 yard contains 7450 Concord and 1000 Delaware vines. 

 The vineyard last year was not treated, and yielded 

 D 



