But it must be remembered that the whole essence of any scheme 

 of sylviculture lies in a proper rotation under which the timber will 

 ripen in order year by year. The whole area intended for forest 

 must be divided, generally speaking, by the number of years fixed 

 for the rotation, something between 80 and 120. 



Another preliminary is the provision of what is called a De- 

 monstration Forest. Such an area would not only afford a field 

 for scientific experiments, but would also provide a School for 

 Forestry apprentices. One of the most valuable experiments it 

 can provide will be that of turning bad woodlands into good. 



MARTIN MARTIN. The importance of Forests in Military De- 

 fence. - Trans, of the R. Scottish Arbor. Soc., Vol. XXIII, 

 Part. II. Edinburgh, July 1910, pp. 223-226. 



Data are given on Forests in Military Defence and various histo- 

 rical considerations brought to bear on the argument. 



The forests form screens within a few years after planting, 

 and increase in obstructive value with the years, being always, and 

 for permanent reasons, obstructions to the advance of hostile armies. 



Transactions of the Royal Scottish Arboricultural Society. 



(Edinburgh, Printed for the Society, vol. XXIII, part I, Ja- 

 nuary, 1910). 



The volume contains the following articles: 



1. The Duty of the State as regards Afforestation. By a Cor- 

 respondent. 



2. Afforestation and Local Taxation. By Sir Kenneth Macken- 

 zie, Bart. 



3. The Sitka Spruce as a Tree for Hill Planting & General 

 Afforestation (with Plate). By Jonn D. Crozier. 



4. The Financial Aspect of Forestry. By Percival Trent- 

 ham Maw. 



5. Afforestation of Catchment Areas. 



6. Vegetable Remains from the Site of the Roman Military 

 Station at Newstead, Melrose. 



7. Underplanted Larch Plantations at Novar. By William 

 Mackenzie. 



8. Continental Notes - Germany (with figures). By B. Ribben- 

 trop, C. I. E. 



9. The Timber trade conference. By Geo. U. Macdonald. 



