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Economics in Concrete

UNDER this title, an endeavour will be made to give the ultimate results of practical experiments with concrete mixtures whiah have been carried out intermittently over a period of four years. The author has made his investigations as opportunities lent themselves, and found himself, after his first series of experiments, obliged to tear up the results of much labour, and persist later in a more thorough manner. This has happened several times, and this paper will be practically confined to the results of 1923, and as such, will be referred to here. B. Price Davies