229 



had 13 per cent, of their fruit injured by the curculio and 52 per cent, 

 by the gouger, an injury far less, especially in case of the curculio, than 

 in either of the previous lots. These last trees, however, were rather 

 near the house, and were so located that they were frequently i)assed 

 by persons going into the garden and probably were not good checks, 

 but [ can see no reason why the trees sprayed with water were not good 

 checks for the trees treated with London purple. However this may 

 be, the experiment shows that a large percentage of the fruit may be de- 

 stroyed by the curculio and gouger upon trees thoroughly and repeat- 

 edly sprayed with London purple. It is also true that these trees were 

 much worse attacked by curculio this year than they were last. In a 

 large number of untreated native varieties in my experiments this 

 year none were worse attacked than the above lot treated with London 

 purple. 

 Mr. Bruner presented a paper entitled : 



NOTES ON BEET INSECTS. 



By Lawrence Bruner. 

 [Author's abstract. ] 



Mr. Bruner gave a brief account of the insect enemies of the beet 

 about as follows : 



"Ever siuce the sugar beet question has been agitated in the West, 

 and now particularly that a large factory for the manufacture of sugar 

 from that plant has been built at Grand IsUind, in Nebraska, there is 

 much interest taken in the subject. Every gathering of farmers or other 

 tillers of the soil makes it a point to discuss the different features of the 

 sugar-beet question. Even the subject of insect attacks upon the beet 

 has received some atteutioTi from these gatherings. 



"This last feature of the subject is by no means the least important of 

 the matters connected with the culture of the beet for sugar. I have 

 made a casual study of the insect enemies of the beet during the past 

 summer and have reported in a preliminary way to Professor Riley as 

 a part of my work under the Division of Entomology. My studies have 

 resulted in finding at least sixty-four distinct species that feed upon 

 that plant, either upon the leaves, or on the root. These are as follows: 



Spilosoma virgiuicse. 



Isabella. 

 Mamestra picta. 



cbenopodii. 

 Eurycreon ran talis. 

 Plusia brassicse. 

 Deilephila lineata. 

 Copidryas gloveri. 

 Agrotis, several species. 

 ► Leucaiiia unipuncta. 

 Botis posticata. 



Melanoplus femur-rubrum. 



atlanis. 



spretus. 



difFerentialis. 



bivittatus. 

 Dissosteira Carolina. 

 Trimerotropis latifasciata. 

 Spharagenion sequale. 

 Pezotettix olivaceiis. 

 Ligyrus gibbosus. 

 Lachaosterna f nsca, and others. 



