F p r
XX VI INTRODUCTION.
workmen; the roots or hases were afterwards trampled hy
their feet, and much of the surface of the rock had heen
chiselled. Upon returning to the Carr in May 1814, in order
to recommence operations, it was matter of no slight surprise
to find the surface again as completely invested with
large sea-weeds as ever it was, although little more than six
months had elapsed since the work had heen left off, when,
as already said, the rock had heen cleared of weed. In particular
it was observed, th a t many newly produced specimens
of Fucus esculentus measured six feet in length, and
were already furnished with the small appendages near the
base or pinncB, which, a t maturity, contain the seeds of the
plant. The common tangle, F. digitatus, was generally only
about two feet long. I t is to he observed, th a t the specimens
here alluded to, were taken from th a t part of the surface of
the rock which had heen dressed off with the pick and chisel
the preceding a u tum n ; they had therefore grown from the
seed.” SYNOPSIS»