40 TRANSACTIONS OF ROYAL SCOTTISH ARBORICULTURAL SOCIETY. 



■were attacked. The age of this wood should be noted. Stumps 

 of a former hardwood crop occurred on the area. In Hampshire, 

 on old agricultural ground, a 25-year-old Japanese larch 

 plantation was found to be badly attacked. In other respects 

 this wood appeared to be in excellent condition. In Perthshire, 

 a 25-year-old European larch plantation, a second crop, with 

 the remains of old stumps showing, was very badly infested. 

 The rot in some cases extended for several feet up the stems. 

 The percentage of thinnings attacked was over 50 per cent. 

 In Renfrewshire, two badly-rotted stems were encountered in a 

 37-year-old Norway spruce wood. 



In Northumberland, out of seven stems felled in a 17-year-old 

 plantation of western red cedar (Thtiya giganted) two showed 

 incipient heart-rot and two distinct heart-rot. Large stumps of 

 a previous hardwood crop occurred over this area. Two 

 Japanese larch cut out of this wood were found to be similarly 

 diseased. On old agricultural ground in another part of the 

 same locality, severe heart-rot was observed on many recently 

 cut Norway spruce under 25 years of age. A 54-year-old 

 Douglas fir wood recently felled in Wester Ross-shire, showed in 

 a number of cases the presence of heart-rot. The soil in this 

 wood was of the usual variable type found in the west, 

 namely, bare rock knolls with patches of extremely compact 

 glacial drift. The heart-rot appeared to be generally present 

 on the glacial pockets. In Northumberland, on an area over 

 which there is a remarkable accumulation of fine glacial 

 gravels, larch is invariably very severely attacked, the rot 

 extending several feet up the stems. In the south Tyne 

 Valley, a 39-year-old spruce wood on a heavy Boulder till 

 held a large proportion of stems with heart-rot, in many cases 

 in a very advanced stage. In all other respects this wood 

 appeared to be in very fine condition. Patches of trees killed 

 by root fungi were noticed also in a large Scots pine area 

 near Hexham. In Lanarkshire, on a soil derived from a stiff 

 h^ayy Boulder till from the carboniferous series, the percentage 

 of trees with heart-rot noticed among the thinnings of two 

 plantations was 30 per cent. Several of these thinnings were 

 of large size. Old stumps of a previous crop were present on 

 the area, and patches of dead Scots pine were similarly present 

 around old stumps in other woods of the same estate. In a 

 plantation growing on old farm land, severe heart-rot occurs 



