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A Study of the History and Meaning of the Expression “Original Gravity”


    THIS little treatise, the substance of which appeared in the Brewer's Guardian, has been compiled mainly for the information of brewers and distillers, and for the use of the officers in the Inland Revenue Department, in order to permit of the original gravity of a sample of wort of beer or of distillers' wash to be determined after fermentation with a view of fixing the amount of drawback, in conformity with the Act 10 Vict. cap. 5, 1847, and the Inland Revenue Act, 1880. There are four different methods in more or less common use for determining “original gravity” These are very fully described and the incidental errors carefully noted; preference is very properly given to the distillation process of Dobson and Phillips, with the modifications in the tables rendered necessary by the investigations of Graham, Hofmann, and Redwood, made at the instance of the Board of Inland Revenue. We can recommend the work as a thoroughly trustworthy guide to the brewer and distiller in a matter of great practical importance to tbeir trades.

    A Study of the History and Meaning of the Expression “Original Gravity.”

    By J. A. Nettleton, of the Inland Revenue Laboratory, Somerset House. (London: A. Lampray, 1881).

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