Arthur S. Horne and Eleanor Violet Horne 185 



English mycologist appeared to have given any considerable attention 

 to the subject, and that it was very important that mycologists in this 

 country should be able to inform growers to which malady, whether 

 bitter pit or Cylindrosporium spot, any attack was due. 



These considerations furnished the incentive to study the "spotting" 

 problem. Early in the following year we received reports from Kent, 

 Surrey and Berkshire of "spotting" in other varieties, notably in 

 Bramley's Seedling, Cox's Orange Pippin and Allington Pippin, and 

 specimens were forwarded for examination by several fruit growers. 

 It was reported from Kent that very many of the finest and best ripened 

 apples had become covered with very small red spots: this had not 

 prevented the apples from keeping, but it had greatly injured their sale. 

 The trouble developed entirely in apples in store. Barker 1 reported 

 "spotting" in Allington Pippin and Bramley's Seedling from Worcester- 

 shire, Cambridgeshire, Oxfordshire and Sussex, and concluded that the 

 trouble was general throughout apple growing districts. 



2. Symptoms. 



The spots show considerable variety in form and colour. They are 

 sometimes green, of a darker shade than the normal skin colour, as for 

 example in Lord Derby, Newton Wonder, and Reinette du Canada, 

 where dark green blotches show up conspicuously on a yellow-green 

 skin. In the case of a pigmented apple, the spots are usually of a darker 

 shade of red or purple than the normal (Scarlet Nonpareil). In varieties 

 with partial pigmentation, the spots are frequently coloured rose, red 

 or purple (Mrs Philimore, purple spots on a green ground) ; coloured spots 

 also appear in normally unpigmented varieties such as Old Nonpareil, 

 Reinette du Canada (blotches with purple edging), and Lane's Prince 

 Albert (dark brown blotches bordered pinkish red). 



Curiously mottled blotches are sometimes formed with the mottlings 

 in purple, purplish brown and green; for example, Ribston Pippin, 

 Old Nonpareil, Cox's Orange Pippin, Charles Ross (brown, and purplish 

 brown). 



Dark brown spots occur in Ecklinville Seedling, Yorkshire Creening, 

 etc.; pale brown spots in Cox's Orange Pippin, Charles Ross, Emperor 

 Alexander, Peasgood's Nonsuch (spots with irregular contour), and Duke 

 of Devonshire. In Hollandbury the spots are dark, of irregular outline, 

 angular and so numerous as to give the apple a fantastic appearance. The 



1 Barker, B. T. P. Ann. Reft. Agr. and Hort. Bes. Sta., Long Ashton (1914), pp. 97-99. 



