58 TRANSACTIONS OF ROYAL SCOTTISH ARBORICULTURAL SOCIETY. 



management, be at the disposal of the lecturer, who cannot 

 Otherwise ensure that it will suitably illustrate his lectures. 

 Again, as the courses of lectures at the various educational 

 centres cannot be modified in accordance with the silvicultural 

 conditions of the surrounding locality, it follows that neither 

 can the management of the garden be so modified without 

 serious impairment of its usefulness. Most of the species it will 

 be desired to grow in any garden will probably grow fairly well 

 up to a certain age on any ground that might be selected for the 

 purpose ; and the further study of all species alike must be 

 carried on in the Demonstration Forest; for the success or 

 failure of the various species, as full-grown forest crops, cannot 

 be proved in the garden. If, however, owing to unsuitable 

 environment, any selected species should fail to serve its pur- 

 pose in the garden, its cultivation there would be dropped. The 

 elevation of the ground selected for the garden should not much 

 exceed 800 feet. The site should have a moderate slope, with 

 good natural drainage, and should not be much exposed to cold 

 or to strong winds. The soil, which should be sufficiently deep, 

 should possess a fair degree of fertility, judged by the forester's 

 standard ; and the area should lie in a single compact block, 

 with as wide a range of altitude as may be compatible with this 

 condition. 



Suppose an area of 200 acres to be available. A commence- 

 ment might be made by stocking a compact block of 25 acres 

 in i-acre plots of the following species, viz. : — 



Hardwoods. Conifers. 



English elm. Silver fir. 



Scotch elm. Spruce. 



Sweet chestnut. Larch. 



Pedunculate oak. Austrian pine. 



Sessile oak. Weymouth pine. 



Beech. Scots pine. 



Norway maple. Corsican pine. 



Sycamore. Douglas fir (Oregon). 



Ash. Douglas fir (Colorado). 



Common alder. Hemlock spruce. 



Hornbeam. Sitka spruce. 



Black poplar. Japanese larch. 



Thuya sp. 



