152 
species having a short period of growth exhibit intermittent 
seasonal con and also Raaee it is not alone species of 
northerly it seems, 
at least toa cetin ae that there are variations which are 
to be recognized as sp 
would be of eee interest to have data on the be- 
havior, throughout their range, of species, such as Quercus 
palus stris, Q. tae nd Q. rubra, which, under the climatic condi- 
d in nurseri erous native and introduced species 
affords especial opportunity for the comparison of the avior 
Co} pecies er different conditions. During the past 
oody species in the New York Botanical Garden with special 
reference to the various problems involved 
A. B. Stout. 
A WHITE PINE PLANTING 
In the southwestern part of the tract added by the city last 
Garden dha: 
year to the reservation, nearly opposite the Fordham 
Hospital, are two long grassy, otherwise nearly bare, partly 
roc! The eastern of these ridges was selected thi 
hite pine plantation. The ground required little 
preparation, only the removal of loose stones and fe or 
s mall trees being nec ry. ar the southwester: 
ing place; the original contour of the ridge is thus nearly restored 
