8 



H. E. Thomas and W. D. Mills 



No quince rust has been found on the foliage of apple, and no hawthorn 

 rust has been seen on apple fruit. This is rather to be expected in view 

 of the behavior of these diseases on hawthorn and quince. The hawthorn 

 rust has appeared, however, with astonishing frequency on the collec- 

 tions of apple foliage which we have made (table 4). These collections 



were made in six counties in eastern New York, and at one station each 

 in Vermont and Massachusetts. Foliage of only one variety (Wealthy) 

 has been received from Massachusetts. Six of seven specimens represent- 

 ing as many varieties from Orwell, Vermont, bore only hawthorn rust. 

 In a few instances this disease may be classed as severe, but more often 

 the spots are small and sparse, with few aecia. This may account for 

 the fact that the disease has generally escaped attention. In addition 

 to the records included in table 4, the hawthorn rust has been found on 

 seedling apple trees in two localities in Tompkins County, central New. 

 York. In one of these cases the infection was severe and decidedly 

 predominant over the apple rust. Two collections of seedling apple 

 foliage from different localities in the Hudson Valley bore only apple 

 rust. 



