10S Injury to Foliage by Bordeaux Mixture, [may, 



of the leaves were so injured that they fell), while trees of 

 Potts's Seedling, standing among the Lord Derby, and 

 sprayed with them, were unharmed. 



Secondly, it is a fact that among English apples some 

 varieties are immune, or at least resistant, to "scab." Such 

 varieties are Bramley's Seedling, Lane's Prince Albert, 

 Stirling Castle, Grenadier, Queen, the Victorian, and Golden 

 Spire. Then, again, there are a number of varieties, such 

 as Lord Derby, Beauty of Bath, Newton Wonder, Worcester 

 Pearmain, Allington Pippin, which are by themselves but 

 little liable to "scab," but become infested when the disease 

 is rampant in their neighbourhood. When varieties of apples 

 which are specially susceptible to "scab" as regards their 

 foliage or young wood, — such as Cox's Orange Pippin, King 

 of the Pippins, Ecklinville, Lord Suffield, Wellington, Bis- 

 marck, Lord Grosvenor, Summer Pippin, — are grown con- 

 tiguous to those varieties which are partly resistant, the aim 

 of the grower should be to keep the susceptible varieties clean 

 by thorough and systematic spraying (treating with the winter- 

 wash of copper sulphate solution those varieties whose young 

 wood becomes "scab" infested). 



In the case of Cox's Orange Pippin, which it is difficult 

 to spray in summer without injuring, the aim must be to 

 keep the surrounding varieties free from "scab" by spray- 

 ing, and in this way avoid letting the "scab " invade the 

 3' r oung wood of Cox's Orange Pippin, as it readily does 

 if given an opportunity. It sometimes happens that a block 

 of trees of Cox's Orange Pippin gets badly infested with 

 "scab" by the planting up of young diseased trees (for, 

 unfortunately, it is by no means rare for young trees of this 

 variety to be sent out from English nurseries with the young 

 wood badly infested with "scab"); in such a case regular 

 applications of the winter-wash of copper sulphate solution 

 will ultimately result in healthy wood being grown, when 

 the chief source of the disease will be removed. 



Thirdly, it seems certain that in any one season "Bordeaux 

 injury " may occur in some localities and not in others. Some 

 marked instances of this have occurred in Kent during the 

 past season. For instance, it occurred in the districts 

 of Maidstone, Paddock Wood, Southfleet and Longfield, 



