76 



Miss Ormerod was very gratifying to his English hearers. The 

 response to his invitation to honour the memory of Miss Ormerod 

 by rising in their seats would have been unanimous had every 

 one understood in time what was desired of him. Any debt 

 in this connection owed by Hungary to England was in a fair 

 way to be paid with interest, and England would certainly have 

 to borrow some of the methods introduced by Prof. Jablo- 

 NOWSKi against insect pests. 



R. C. L. Perkins also thanked the lecturer for his interesting 

 papers. 



A. G. L. Rogers then gave his paper entitled : 



The Necessary Investigation in Relation to Insect and 

 Fungus Enemies of Plants, Preliminary to Legislation. 



(No manuscript has been received. — Editors.) 



Discussion. 



C. Gordon Hewitt, in opening the discussion, disagreed with 

 a number of the statements which had been made. Instances 

 were given controverting the assertion that in no case had regula- 

 tions been responsible for keeping pests out of a country, and that 

 regulations had never been imposed until pests had been intro- 

 duced. He mentioned examples of English insects, which had 

 proved injurious in N. America. In commenting on the value 

 of lists of injurious species of insects, he pointed out the difñ- 

 culties introduced through lack of knowledge as to the dangerous 

 possibilities of apparently injurious insects, and the sudden 

 coming into prominence of hitherto uninjurious species. It was 

 not possible, in the present state of our knowledge of the bio- 

 nomics of native insects, to say whether a species injurious in one 

 country would be injurious or not in another country into 

 which it might be introduced. A thorough knowledge of the 

 bionomics of native and introduced insects was necessary, nor 

 was it always possible to study insects in the mass, especially in 

 the case of introduced species. At present the only safe method 

 was the prohibition of anything but clean imports. The question 

 of the introduction of insect pests could only be dealt with in an 



