O F N ATURE, 75 
gardens, that plants are preferved in the fame 
way. They alfo hinder the fermenting earth 
from forcing the roots of plants upwards in the 
fpring *, as we fee happen annually to trunks 
of trees, and other things put into the ground. 
Hence very few mojfes grow in the warmer cli- 
mates, as not Being fo neceffary to that end in 
thofe places. 
The Englifti fea mat -weed or marran will bear 
po foil but pure fand, which nature has allotted 
to it. Sand the produce of the fea, is blown 
by winds oftentimes to very remote parts, and 
deluges, ,as it were, woods and fields. But 
where this grafs grows, it frequently fixes 
the fand, gathers it into hillocks, and thrives 
fo much, that by means of this alone, at lafl 
an entire hill of fand is raifed. Thus the 
fand is kept in bounds, other plants are pre- 
ferved free from it, the ground is increafed w , 
w This obfervation is found in Linn. Flor. Lapp. p. 6a„ 
where he fays the Dutch fovv this grafs on their fand banks, 
that the fand may not overwhelm the neighboring parts! 
I do not fee why this experiment Ihould not be tryed on the 
barren fands in Norfolk, where I am affured by credible 
withelfes, that the fmall cottages are fometimes totally bu- 
ried under fand during high winds. This grafs grows 
plentifully along the fea fhores in England. Vid. Ray, 
