oaks. Shelter by conifers is always more un- 

 favourable than that of the above trees, with the 

 exception of the Strobus species ; with these may 

 be ranked two- and three-needle-sheathed pines 

 Spruces and firs, along with beeches, are the least 

 suitable as protective plants. 



9. The notion that anywhere in the world, 

 whether above, or north of, our vegetative 

 boundaries, species of timber may grow or be 

 planted may be dismissed as unnatural. 



10. It is only in the case of trees which grow 

 quicker, or at least as quickly, as their neighbours 

 that individual mixing is admissible. In other 

 cases planting in groups is preferable, so that 

 perpetual supervision and continued felling in 

 the experimental areas may not be required. 



i r. No foreign firs, spruce, oaks, ashes, &c., 

 can furnish in the distributive domain of their 

 closely related indigenous species any better 

 product than the latter. The same conditions 

 under which the native tree produces good or 

 bad wood will also make its foreign kindred good 

 or bad. 



12. On the other hand, in the case of all 

 climatically admissible "foreign trees," the species 

 of which (genus in the pine section) are not 

 represented in the home forests, experimental 

 plantations should be undertaken. 



13. In order to arrive at climatic conditions of 



