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945.--We want to find out something about how the surface water got into that drain. I was informed on Saturday that there were eight or ten openings in that sewer before it fell into the sea, and I was anxious to know whether they were trapped gullies or whether most of them were open.
A.-They are all open below Bonham Road, unless they have been closed within the last three or four months. There has been a lot of work going on within the last three or four months about which I know nothing. Previous to that all the gullies were open below Bonham Road. There are three large traps attached to that drain on
Bonham Road.
946. Surface metal with an iron flap would not be a very good means of ventila- tion, would it?
A. I should not think so.
947. Are any of the surface water drains trapped under ground independently of the gully traps that we see? Are any of the surface drains trapped as they pass along below the roadway?
A -I am not aware of
any.
948. Is there not a form of drain in Hongkong in which you get a sort of trap?
A-I have not seen any. In private houses there may be some.
949.-In Mosque street there is one like I am describing, only it is completely be- yond the opening for the surface water, and so I was wondering whether any of the openings for surface water have traps beyond them?
Street.
A.—I don't know any trap there. There used to be a trap at the top of Peel
950. —So all the surface water passes in without any trap?
A-Except at the gully holes.
951.—And some of them have got valve traps?
A. --- Yes.
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952. They are perfectly useless for the entrance of air?
A.-They keep the air out.
953. You are not aware of how many there are of these I am speaking of ?
A.-I am not aware of
any.
954.-There is one at the corner of the Civil Hospital; and there is a large trap in the centre of that sewer lying below the Diocesan Home in East Street. What I was asking for is, how the air gets in and out, because it cannot get through the gully holes,. because that one has no ventilating shaft. The one in East Street is cut by the trap. The other has a large opening at Rose Villas; there are three traps, but where the water enters it is open ?
A. I don't know.
By Dr. Manson.
955.-Do you know Nullah side, Mr. AITKIN's house?
A. Yes.
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