GERMINATION OF TREES AND SHURBS 29:5 



on the germinatioii in percentage of seeds as sold by seedsmen: 

 birch 10 ; alder 15 ; elm 20 ; hornbeam 50 ; oak 60 ; chestnut 60 ; 

 maple 50'; beech 60. 



K. Gayer and H. IMayr^ state that in spite of care there is 

 some loss in the vitality of seeds. Robinia was found to ger- 

 minate 75 per cent; oak 69; beecih 27; elm 26; birch 25. 



Barring-ton Moore finds "In fir there are indications of a 

 periodicity of reproduction which is of considerably more im- 

 portance than that due to the seed supply. * '■' * and that these 

 conditions are largely controlled by the forest itself."' 



STANTON HILLSIDE SEED PLOT, OCTOBER, 1917. 



SOIL TEMPERATURES OCTOBER 15 TO NOVEMBER 24. 



Precipitation during this period, 1.30 inch. 



M. 



"Die Forstbenutzung- 545 See Zurich Samenkontroll Station. 1S76-1S94. 

 Reprorluetion in the coniferous forests of nortliern Ne\v England. Bot. 

 Ciazette 64, pp. 149-15S. 



