Turning to naval architecture, Mr, Sanger described, the 22 models of the Queen Mary, each about 17 feet long in rough-weather tests on these models, Atlantic waves 1000 feet long and 50 feet high were imitated in the test tank.
The speaker also referred to the study of take-off conditions for flying-boats and the design of a stable craft by the use of complete small-scale models, The use of models in studying problems relating to the stability of foundations, retaining-walls and dams was also dealt with by Mr. Sanger, The authors expressed their indebtedness to Mr. J, V. Dent, of the Henry Lester Institute of Medical Research, for his admirable photographic work in the preparation of the paper; and to the Director of the Institute for his placing of the hall and the projection apparatus at their "The experimental work was carried out at the Henry Lester Institute of Technical Education, and the models constructed there in the various workshops and laboratories, A short discussion followed the reading of the paper, which was dlustrated by lantern slides; and the various models on view were then by members present,
Text read from the printed page and cleaned; old type leaves the occasional error.