approximate height and spread of each after this pruning was added 

 to the record. 



Time of Treatment. 



The spring of 1902 was about ten days hiter than usual at 

 Amherst and treatment therefore was not begun till March 27th. 

 From that date it was continued whenever conditions would permit 

 till April 5th which was followed by a period of bad weather lasting 

 till the 14th, on which day the work was completed. By the 14th 

 the leaf buds were beginning to open and the flower buds in some 

 cases were sufificiently open to show their color. 



Results of Treatment on the Trees. 



No injurious effects from any of the treatments were observed on 

 any of the tcees aside from one case given below, except that on 

 three or four a few of the buds appeared to be somewhat browned 

 and these trees seemed to be late in starting. As other trees of the 

 same kind and variety, and treated in the same way, were not thus 

 affected it is probable that the delay was not due to the treatment. 



Weather Conditions. 



Records of the temperature, force and direction of the wind, 

 amount of cloudiness, and the relative humidity of the air were kept 

 during the spraying, with the hope that anticipated differences in 

 results might be explained in this way. The weather conditions 

 were as variable as could have been desired for this purpose, being 

 sometimes excellent, w^hile at others they were very bad for the work. 

 In some cases spraying was continued till rain or sleet began to fall, 

 and in one case quite a heavy rain came on half an hour after the 

 work for the day was ended. When the records were studied how- 

 ever, it became evident that weather conditions had little effect on 

 the results except where rain began so soon after spraying as to 

 wash the spray off the trees before it had had time to dry on. With 

 the kerosene, however, spraying on a bright sunny day with a gentle 

 wind blowing appeared to cause a quicker evaporation than on damp 



