New York Agricultural Experiment Station. 323 



This list includes 153 bearing trees. Without the young Bald- 

 wins there are 124 mature trees in full bearing. Several varie- 

 ties are not well enough represented in both classes to permit 

 them to be used in comparing treated and untreated sections. 

 Excluding these there still remain forty-seven treated and forty- 

 seven untreated trees, mature and in full bearing, whose records 

 for the five years may be used for determining the results of 

 the experiment. These belong to the following varieties: Bald- 

 win, Fall Pippin, Rhode Island Greening, Roxbury Russet and 

 Northern Spy. 



RESULTS OF THE EXPERIMENT. 



Records were kept of the September condition of the foliage 

 in 1894-5-G-7 and of the condition June 23, 1894. A careful esti- 

 mate of the condition of the foliage of each tree was made by 

 two persons and the average of the two estimates was recorded. 

 For obvious reasons it wa.s impossible to examine carefully every 

 leaf and note whether or not it was injured by the scab. There- 

 fore the chief means of determining whether treating the soil 

 with ashes had any influence on the prevalence of the scab was 

 by careful examination of every fruit with reference to this point. 

 During the first three years the fruit was classified with reference 

 to the scab into four classes: (1) free; (2) slight and considerable, 

 averaging about 20 per cent injury if 100 per cent represents a 

 fruit rendered totally worthless by the scab; (3) bad, averaging 

 about 55 per cent injury, and (4) unmarketable, averaging about 

 85 per cent injury. In 1896 and 1897 the fruit was sorted into 



