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JOURNAL OF ECONOMIC ENTOMOLOGY 



[Vol. 3 



grown from them and that scions cut from healthy trees will produce 

 healthy trees. 



We had an opportunity to observe a very large number of trees 

 during the last 5 or 6 years, and in this nursery, in particular, some 

 40,000 trees were under our observation. In practically every case 

 where the scions were cut from the tops of diseased trees, they pro- 

 duced Crown Gall. 



It looks to me as though, if 50 to 60 per cent of the trees in a nur- 

 sery are affected with crown gall, the entire lot should be destroyed, 

 but until nurserymen have had a little more time to get their nur- 

 series in condition, this would be rather drastic. These questions, as 

 well as transmission of peach yellows and measures of control in the 

 nursery are discussed in my report now in press. 



This concludes the Proceedings of the meeting. 



J. B. Symons, 

 Secretary 



Scientific Notes 



A Typical Name for the Friend Type of Nozzle. — At the meeting of 

 Economic Entomologists in December, 1910, there was more or less confu- 

 sion when speaking of a comparatively new type of nozzle. As no general 

 name has been decided upon, the maker's name has usually been given this 

 nozzle, such as the Friend, Myers' Power, Deming, etc. It is so distinctly 

 different from the Bordeaux, Vermorel and other types that I would suggest 

 the name Disc. The feature of the nozzle is the disc, which is found at the 

 outlet and regulates the spray. 



This type is being used very extensively and is a great improvement over 

 the old nozzles. The name disc describes very simply the main feature and 

 can be generally used in such a way as not to show any partiality to an 

 individual dealer or manufacturer. 



Should this suggestion meet with the approval of the Economic Entomol- 

 ogists, might it not be well for all to adopt the same name? 



H. L. Frost 



