6o 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. 



ERR A TUM. 



I find that a very obvious error has crept in upon page 185 (Vol. XII.) The 

 two sentences commencinfj at the fourth hne from the bottom should read thus : — 

 " Each pulpus consists primarily of six distinct joints, Coxa, Trochanter^ Femur y 

 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 he 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, ]\Ir. Walter Willoughby, noticed the presence 

 in the excavations of wooden pipes, which liad 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, 



