158 MASSACHUSETTS HORTICULTURAL SOCIETY 



Question. How can the green aphis be controlled? 



Lecturer. Kerosene emulsion spray much diluted will keep 

 them down although lime-sulphur is better but more troublesome 

 to apply. 



Question. To what extent would 3'ou practice summer thinning 

 of fruits. 



Lecturer. Begin thinning early varieties like Duchess and Yel- 

 low Transparent about June 24. This can be carried on for a 

 long period. I have practised thinning to a considerable extent 

 and am well satisfied with the results, but did not have the courage 

 to go far enough. 



Question. Is lime of any service in an old orchard? 



Lecturer. Yes, indeed. Lime is valuable in the forming of 

 wood and in overcoming moss growth. 



Question. How deep should the orchard be plowed or culti- 

 vated? 



Lecturer. It is not necessary to move a great amount of soil. 

 Only loosen the top soil. 



