NEW AQUEDUCT FOR MONTREAL.
Contracts will be let next month for the new aqueduct and the intake pipe at Montreal, Que. The present aqueduct has been widened for a distance of about a mile from the point where it joins the river; but for the rest of the way it is too narrow, and will have to be enlarged to a uniform width. It is with this widened part that the lateral conduit will be connected. This is but a temporary arrangement, as it is the intention later to have a covered conduit all the way from the centre of the river to the wheelhouse in Point St. Charles. The present purpose is to get a larger supply of water, and, alter that is done, the work of w-iaening the aqueduct and completing the conduit can be carried on at leisure, lhe branch connection between the new conduit and the old aqueduct will be about 30 it. m length, it will have the same sectional dimensions as the main conduit, and in its construction the contractor is to be governed by all the clauses of the specification which covers tlte conduit. Provision is also made for connecting the conduit with the aqueduct at a point near the wheelhouse, which branch connection, of about 25 ft., will have the same sectional dimensions as the conduit itself. This connection will assure a complete water supply, in case anything goes wrong with the covered conduit, as then all that will have to be done will be to connect with the old aqueduct and start the pumps. Along the top of the conduit manholes are to be built a mile apart. It is provided that the crown of the conduit must be covered with 4 It, of earth. Full directions are given as to the sue of the conduit, which will be 27.500 ft, long, and an average of 8 ft. 6 in. in diameter, though for practical reasons the bottom of the conduit will be flat. The interior of the conduit is to be made as smooth as possible, and no rough edges for the collection of dirt will be allowed. The entire inner surface must be left as smooth as a plastered wall. All the interstices or rough surfaces are to be carefully smoothed over with mortar, and, if any protuberances show themselves at the joints of the moulds, the contractor must be required to pick them away. The work must be completed in twelve months. If it is not the city reserves the right to call for new tenders for the uncompleted part, and the original contractor shall be responsible for any extra charge. In case of faulty work, the city is empowered to order alterations.