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(3.) Anti-syphonage pipes (i.e., ventilating pipes taken
off the out-goes of W.C. traps) are, by the proposed new
Bye-laws, to be made either of drawn lead or of heavy cast
iron, of certain weights and thicknesses, and of drawn lead
only when such anti-syphonage pipes are inside buildings
—conditions not mentioned in the present Bye-laws.
(4.) Full details are given in the proposed new Bye-laws
as to proper conneciions between—
(a.) Lead soil-pipes and iron or stoneware drains;
(b.) Stoneware W.C. traps and iron or lead soil-pipes
(c.) Iron soil-pipes and stoneware drains.
(5.) Both the proposed new Bye-laws and the present
Bye-laws prohibit any connections between soil-pipes and
(1) rain-water pipes, or (2) the wastes of baths or sinks,
other than those provided for the reception of urine and
other excremental filth, and also prohibit the use of traps
in soil-pipes, or soil-pipes and any drains with which they
are connected.
Joseph Priesti.ey,
Mcdical Officer oj Health.
July lOih, 1899.