60 ON TREE-TRUNK WATER-PIPES.
Micaria pulicaria, Sund.—Common in many parts of
the Forest. Patches of herbage growing on sandy slopes are a
favourite haunt with this species, and by beating such herbage
with the hand, the inmates may be induced to rush out upon the'
sand. They may then be captured with a tube, but must not be
touched with the fingers, or the beautiful abdominal scales are
liable to be detached.
ERRATUM.
I find that a very obvious error has crept in upon page 185 (Vol. XII.) The
two sentences commencing at the fourth line from the bottom should read thus:—
"Each pulpus consists primarily of six distinct joints, Coxa, Trochanter, Femur,
Patella, Tibia, and Tarsus. The last five of these joints are known amongst
various authors as exinguinal, humeral, cubital, radial and digital respectively;
and the first one can be satisfactorily seen only by removing the maxilla, with the
palpus attached, and examining its inner surface." F.P.S.
[To be continued.]
ON TREE-TRUNK WATER-PIPES.
By T. V. HOLMES, F.G.S., F. Anthrop. Inst.
WHILE the Essex Field Club does not invite remarks on
historical antiquities of a definite date, it has always been
interested in things of a primitive kind, the use of which has
been continued through many centuries into modern times, like
Tree-trunk Water-pipes. And though the fragment of an old
wooden water-pipe exhibited at the meeting of the Club on
January 25th, 1902 (which led me to take an interest in
the subject), was not found within the borders of Essex, it is
obvious that appliances for the water supply of London must
have been used in and around that city without any regard to the
intervention of county boundaries between Middlesex and Essex.
As regards the specimen mentioned, I obtained it in the
following manner. Last year (1901), Wigmore Street, Caven-
dish Square, in common with a large number of other places,
had its road-way disturbed for the laying-down of telephone-
wires. My friend, Mr. Walter Willoughby, noticed the presence
in the excavations of wooden pipes, which had evidently served
for the conveyance of the water supply of the district at some
former period. They consisted of portions of the trunks of trees,