PROPAGATION-. 



89 



out of doors, but where large quantities are to be handled, 

 they may be mixed with soil on the surface of the ground 

 and left until spring ; such a pile is termed a pit. One of 

 the best materials with which to cover seed-pits is in- 

 verted grass sod. It is often a good plan to have the 

 material that is mixed with the seed so fine that it will 

 easily go through a screen and leave the seeds separated 

 for sowing. 



Wintering Acorns and Other Nuts in Large Quanti- 

 ties. On account of the great liability to injure where 



FIG. -21. A Danish storehouse for nut seeds, where 5,000 bushels of 

 acorns and beech-nuts are stored each winter. The nuts are put 

 in 18 inches deep and turned every day. 



a large amount of nuts are stored in heaps, and on account 

 of the impracticability of stratifying them with sand, 

 the following plan is resorted to in some sections: 



A house is made, preferably with a sandy floor, so as 

 to secure good drainage, and is covered with sod roof 

 and sides, so as to keep out most of the frost. This may be 

 of any size, but perhaps 20 feet in width and any length 



