APPENDIX. Xli 



naturally to the correct level, they should never be planted in deep 

 holes below the surface level under the mistaken view that they will 

 obtain more, water in this way, and the soil must be well firmed 

 about the roois and not merely stamped down round the collar, 

 neglect of this is another frequent cause of failure. When all 

 other methods fail and the area must be restocked, basket planting, 

 may be made but satisfactory financial results can hardly be 

 expected with this costly method. The planting of sissu root and 

 shoot cuttings is now extensively done with satisfactory results. 

 The cost of setting out the plants is cheap and the growth obtained 

 faster than with seedlings. Attempts to grow sal in this way have 

 however failed. 



(3) The time o) planting. 



As regard temperate climates Tourney writes : 

 " From extended studies by Engler on the periodicity of root 

 growth in silver fir, white and Scotch pine, beech, oak birch and 

 maple, it was ascertained that the development and production of 

 roots are not continuous. Eoot growth is interrupted by periods of 

 repose which do not exactly correspond with those when the shoots 

 are at rest. The growth of the roots of coniferous species was 

 entirely suspended from November to March or April, while root 

 growth in the deciduous trees did not appear to undergo complete 

 arrest in growth even in mid-winter. However, the period from 

 February to beginning of March is the least favourable for root 

 growth, due to the low temperature of the soil. In general root 

 begins its rapid development from a few days to several weeks- 

 before its buds start. For this reason spring planting is more 

 successful when conducted at least one or two weeks before the buds 

 begin to swell. The new root growth will not be injured or broken 

 off in setting the plants. 



" It was found that the roots undergo a cessation of growth in 

 summer due to drought, but in October there is a new period of 

 activity, which is much more intense and more prolonged irr 



