66 TRANSACTIONS OF ROYAL SCOTTISH ARBORICULTURAL SOCIETY 



about half the total number of stems have been affected, and 

 these are situated in the damp parts of the area. Austrian pine 

 and European larch planted in the vacant spots succeeded well. 

 No remedy of any kind was adopted, and the trouble has now 

 passed. The growth during the attack became progressively 

 less till it stopped altogether. No. 2 — 48I acres felled and sown 

 as in the case of No. i, and with equal success. Again the 

 attack began in 1904, and again was damaging in the damp 

 spots. Here the trouble was light but continuous, and it is now 

 also passing off, but not completely, for there was a recrudescence 

 in April 19 10 after heavy rain. The gaps have been successfully 

 filled with spruce and Douglas. No. 3 was a place 4 kilometres 

 from No. 2. The attack has but just started. The crop is 

 fairly old and very vigorous, having been sown in 189 1 with 

 Scots, Corsican and Austrian pines. The Scots pine and many 

 Corsican have suffered, but no Austrian. 



This account of an attack, bad though it was, may be considered 

 encouraging, for it shows that so long as the plants are suited to 

 the spot, they can throw off fungoid attacks of themselves ; in fact 

 artificial remedies are practically hopeless in woods of any extent. 

 An example in this connection may be of interest. The present 

 year, as may have been noticed, has been, at least in parts, a 

 very severe one for fungoid attacks, and the plants affected 

 suffered badly. A considerable number of Douglas were planted, 

 half of them inside a wire-net fence, inside a wood, and half, 

 unfenced, in gaps in a beech-wood. The first were possibly 

 rather more in the open than the latter. Hares having got at 

 some of the unfenced plants, a liquid preparation was put on 

 them as a protection, but it was applied too heavily. All the 

 plants started to grow vigorously, but after a time Botrytis 

 Doiiglasii appeared, and soon raged through the unfenced groups, 

 in addition to which the shoots of the year were terribly damaged 

 by an insect (thought to have been a weevil). Inside the fence, 

 although instances of the fungus did occur, practically no harm 

 was done either by fungus or insect. The difference between 

 the fenced and the unfenced plants is extraordinary. It would 

 seem that outside the wire the excessive application of the liquid 

 used to keep off the hares weakened the plants, so that they fell 

 a prey to both insects and fungus, whereas the plants inside, to 

 which nothing was applied, were vigorous enough to save 

 themselves. 



