y2)^ Forestry Quarterly. 



ment of the cones and seed has been retarded so that many trees 

 did not produce normally developed seed. This was especially 

 true of the oak and also of spruce and birch, and to some extent 

 also of beech. How poorly developed the seed and cones were 

 may be inferred from the size of the pine and spruce cones : 



Size of Cones. Average number of reports in per cent. 



Pine. Spruce. 



Large cones, 4 per cent. 3 per cent. 



Cones of medium size, 65 per cent. 62 per cent. 



Small, 31 per cent. 35 per cent. 



Cones affected by worms, 20 per cent. 



The crop of beech acorns in Southern Sweden as well as in the 

 most of Europe in 1909 was good, but in northern Sweden the 

 beech nut did not mature. The early snow further prevented 

 the gathering of beech nuts. 



The data about seed production in 1910 has been furnished by 

 the Forest officers on a uniform blank prepared by the Royal 

 Swedish Forest Experiment Station. The forest officers were re- 

 quired to furnish separately information about the production of 

 cones, seed, and acorns for trees standing by themselves, trees 

 on the edge of the forest, as well as for trees in stands. In order 

 to make this data of practical importance to the Forest, the 

 Forest Supervisors were required to note to what extent each 

 Forest is provided with its own seed for the different species as a 

 result of the seed crop. The following figures were accepted for 

 indicating the extent of seed production and the extent of suffi- 

 ciency for the needs of each Forest : 



Extent of Seed Production. Extent of Sufficiency. 



o-failure, =No seed at all-o. 



i-poor, =Not enough seed-i. 



2-fair, =Sufficient-2. 



3-good, =More than needed-3. 



The indications for trees standing by themselves and for stands 

 in the same locality were combined in the following manner : 



