50 



The Ohio Journal of Science [Vol. XIX, No. 1, 



especially small ones, succumbed, and the canes of Rubus 

 spectabilis were so severely winter-killed as to seriously diminish 

 the crop of berries the following year. Under conditions so 

 exceptionally severe, a high mortality was to be expected 

 among the seedlings which, being dependent for their nutrition 

 exclusively on roots distributed through the sterile ash, were not 

 as well nourished and in as good condition to resist unfavorable 



Photograph by D. B. Church 



GRASS SEEDLINGS IN THE ASH. 



Coming up under the shelter of old clumps of the same species, CaJamagrostis 



langsdorfii. (Vegetation Station 44.) 



influences as though they had grown in normal soil. It was 

 found on examining them the next spring that, as was expected, 

 the mortality had been very high. Nearly all of the special 

 seedlings that had been marked for observation had perished. 

 But, notwithstanding the high death rate, large numbers had 

 survived, and the renewal of growth showed that they would 

 be better fortified against the next winter. 



