238 SEEDING AND PLANTING 



developed wind break, at least on the windward side (Fig. 47). It 

 should not be entirely surrounded by high woods in regions where 

 the soil is heavy or overwet because the movement of the air is 

 so completely checked that the soil is difficult to work particularly 

 during the spring months. To what extent it is advantageous to 





FIG. 47. A forest nursery protected by a high forest. Near 

 Chorin, Prussia. 



protect a nursery by surrounding vegetation in the form of high 

 forest depends upon the conditions affecting each particular site. 

 In general, some protection, at least on the windward side, is 

 desirable. 



10. Development of the Nursery Site 



The manner of developing the site necessarily depends upon 

 the locality and the permanency of the nursery. In general, it 

 relates to putting the site in good physical condition for the 

 growth of the desired stock and in the construction of permanent 

 improvements. 



11. THE GROUND PLAN 



Although the shape of the nursery must necessarily conform to 

 the topography and other features of the site it should, when 

 possible, be rectangular or square. Nurseries of irregular shape 



