96 TRANSACTIONS OF ROYAL SCOTTISH ARBORICULTURAL SOCIETY. 



About 1235 acres are stocked with oak principally, but the 

 conifers, sometimes pure and sometimes mixed with beech, cover 

 large areas. Those belong principally to the younger age-classes. 



The proportion of species in mixture in the forest is : — 

 Oak . . • 15*5 per cent. 



Beech and oak 



Beech 



Beech and conifers 



Pine 



Spruce . 



9 "5 per cent. 



S3'o per cent. 



7 per cent. 



1 1 per cent. 



4 per cent. 



The following kinds of woods are represented : — 



1. Oak woods, pure or mixed with beech. 



(a) Mixed woods of 400-year-old oak and 200-year-old 

 beech about 370 acres. 



{d) Oak woods of 100 to 120 years, with beech partly as 

 underwood and partly as co-dominating wood, about 

 74 acres. 



(c) Oak woods, young and in the pole stage, up to 85 years, 

 covering extensive areas, part pure and part mixed 

 with beech as under and co-dominating wood. There 

 are no oak woods between 120 and 400 years. 



2. Beech woods. 



(a) Mostly pure or under old oak, or sometimes mixed 

 in groups with oak of the same age. 



3. Pine woods, part pure and part mixed with larch, beech, 



and spruce. 



4. Spruce woods, mostly pure. 



According to soil and position, the above-mentioned species 

 thrive well, and under favourable conditions reach a considerable 

 height with full cylindrical stems. Conifers clean themselves 

 with difficulty of lower branches. 



The system is entirely high-forest, with 300 years' rotation 

 for the oak, and 120 years for the beech and other species. 



The annual fall (yield) gives : — 



1. Principal yield : 



300 years' rotation . 98,886-420 cub. ft. ) 353^165-805 cub. ft. 

 120 ,, ,, . 254,279-385 „ J 



2. Intermediate yield 125, 373*852 ,, 



Total 478,539'657 



