Notes 389 



developed examples that are apt to occur in every crop. Such remain 

 permanently attached to the mycelium. A few normal perithecia 

 containing spores that have germinated were also present. The 

 mycelium has shown no sign of life." 



In both of these cases the bushes from which the shoots were taken 

 developed disease in April. A very large number of other bushes 

 in different gardens in Kent developed disease in April also, but in 

 practically every case the diseased shoots had not been entirely removed, 

 and in no case did the mildew appear in that month on any bushes 

 from which the diseased shoots had been removed early in the preceding 

 summer. 



Furthermore about the middle of May specimens were sent to the 

 Board by a private grower in Sussex with a request for information 

 as to the nature of the disease. American Gooseberry Mildew was 

 suspected since the berries showed the characteristic white oidium. 

 The writer, however, asserted disease had not been present the year 

 before. On examination, however, old dead mycelium was found 

 on the old wood about an inch or less from the affected berry. This 

 mycelium contained a number of perithecia which presented the appear- 

 ance of having dehisced in situ and the presumption that the infection 

 on the berry is due to the ascospores from these perithecia is at least 

 strong enough to merit consideration. 



The two reports received from Kew together with the strong empiric 

 evidence collected by the Board's Inspectors as to the conditions 

 under which early infection occurs appears to me to outweigh the 

 evidence collected by Mr Salmon and published in his papers, and I 

 submit that until much fuller evidence is obtained it would be a great 

 pity to allow growers to suppose that they can ignore the over wintered 

 perithecia on their bushes. All the oflS.cers of the Board who have 

 had any experience of this disease are agreed that early tipping is 

 essential for complete success against the disease, but they are I believe 

 all agreed that a partial success may be obtained by late tipping, and 

 that much good may be done by going over the bushes even as late 

 as February or March and removing the affected snags which were 

 overlooked when the bushes were tipped before the leaves fell. The 

 removal of every scrap of disease in the summer or early autumn 

 while the leaves are still on the bushes is a matter of great difficulty. 

 No one suggests that the first tipping should be delayed so long. 



Mr Salmon states in the last paragraph of his paper that if tipping 

 is not carried out till the end of October or the beginning of November, 



26—2 



