An Interesting Bridge at Rotterdam. Adapted from the German

By the courtesy of Messrs. Dorman, Long & Co., Ltd., a large number of members availed themselves of the opportunity to view the works now in progress at Lambeth Bridge and Thames House site adjoining, on Saturday, April 26th.

The CHAIRMAN (Mr. R. H. Harry Stanger, Assoc. M.Inst.C.E.,A.M.I.Mech.E.(Vice- President) said he was sure they had all been very much interested in hearing this paper on this method of transporting concrete, and he would ask the audience to express their appreciation of Mr. Burrowes in the usual way. In this country we had carried out transit mixing in a small way as long ago as in the early 1900's-he was not sure that it was not even before then. One of the block yards at Dover was so situated that it was found convenient to erect gantries acrom the block yard, and set the moulds on either side of the gantries. Mixers were mounted on trollies; they were loaded at one end where the raw materials were, and as they travelled along to the moulds, these mixers were revolved. Thus the mixing was carried out, and the concrete was ready to pour when it reached the mould. It seemed to him that the great advantage of this system was the saving of space on a building. As all knew, in any big town there was never much space allowed the contractor into which he could put his materials for concrete, so it certainly seemed that this transit system offered very great opportunities in that direction. Whether it would ever come into use in this country in the same way as it had done in America was another thing. He would ask Mr. Burrowes what was the slump of the concrete shown in the picture. It poured like soup on to the floor. Perhaps the driver had too much water in it?

The CHAIRMAN, Mr. EWART S. ANDREWS, B.Sc., M.INsT., C.E. (Hon. Secretary), proposed a very hearty vote of thanks to Mr. Gray for placing his views so clearly before the Institution in a very interesting and thought-provoking paper. It was a special privilege to propose that vote of thanks, because Mr. Gray had been associated with him (Mr. Andrews) for a very long time.