136 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



Apple Fruit-spot, The Jonathan. By W. M. Scott and J. W. Roberts 

 {U.S.A. Dep. Agr., Bur. PI. Ind., Circ. 112 ; Feb. 1913 ; pp. 11-16 ; 

 2 figs.). — This is considered to be a new fruit-spot of the apple, the 

 ' Jonathan ' being the most susceptible variety, the * Spitzenberg ' 

 almost as much so, and the ' Yellow Newtown ' ranking third in this 

 respect. The spots are seldom more than skin-deep, dark brown 

 in colour, more or less circular in outline, from one-eighth to three- 

 fourths of an inch across, at first scarcely depressed, but later becoming 

 considerably sunken. The disease only occurs on fully-matured 

 fruit, and usually develops after the crop is picked. Fruit gathered 

 at the proper time, or rather early, rushed into cold storage with only 

 two or three days' delay, and consumed within a few days after removal 

 from storage, does not develop the disease to any serious extent. 

 Fruit of susceptible varieties kept in common storage, or delayed in 

 reaching cold storage, usually becomes affected. Investigations seem 

 to have disposed of the theory that the spot is due to spraying 

 with arseniate of lead. Nearly 400 cultures of the diseased spots have 

 been made in various ways and on various media, but no organism 

 has been isolated with any degree of consistency. It is considered 

 to be a physiological trouble falling in the same category as the bitter- 

 pit or Baldwin spot. — A . P. 



Apple Leaf-hopper. By L. Haseman (Jour. Econ. Entom. vi. 

 p. 240 ; April 1913). — ^The author finds that, contrary to the general 

 belief, this insect {Empoascus mali) passes the winter as an imago 

 among rubbish. There are several broods, and the first usually curls 

 the leaves badly. Spraying does not seem to keep it in check 

 effectively, but an adaptation of the sticky shield arrangement led to 

 the capture of large numbers. It was apparently used only on quite 

 young trees. — F. J. C. 



Apple Leaf-miner, The Unspotted. By L. Haseman [Jour. Econ. 

 Entom. vi. p. 313; June 1913). — ^This insect [Ornix geminatella) does 

 considerable damage in some seasons, four or five broods occurring, 

 but it is not usually a serious pest. — F. J. C. 



Apple * Tardive de Vogelsang ' {Rev. de VHort. Belg. Feb. 15, 

 1913, p. 56). — ^This new apple, shown by M. F. Lambeau at a meeting 

 in Brussels, is a vigorous grower, very prohfic, the fruit is delicious, 

 and the tree is said to be proof against woolly aphis. — M. L. H. 



Apple Varieties in Ohio, Disease Susceptibility of. By A. D. 



Selby {U.S.A. Agr. Exp. Sin., Ohio, Cir. 133, April 1913, 4 pp.)- 

 — ^This paper gives a list of thirty-eight varieties of apples with the 

 degree of susceptibility to the following diseases : Crown gall, collar 

 rot, blister canker, twig blight, scab, bitter rot, blotch, black rot, 

 fruit spot, Baldwin spot. — A. B. 



