Excerpt from Abstract of the Proceedings of the National Convention of 1900 for Revising the United States Pharmacopoeia: Held at Washington, May 2, 3, and 4, 1900
Yet it may suffice to measure wine, water, and aqueous liquids in some instances, provided that for this purpose vessels be employed, of glass where the nature of the sub stance requires it, Whose capacities and divisions accurately correspond with the divisions or multiples of the modern pound. And so saying, our fathers sowed the tares which grew up with the wheat, and choked out the true grain until only by the labor of many years were they uprooted and the system of parts by weight in its purity reinstated in the United States Pharmacopmia. The tares grew rapidly, for in the second edition of the pharmacopceia, that of 1820, ﬂuid measures were employed. The sin of the men of 1820 in changing from parts by weight to liquid measures of quantity was made greater by the fact that the liquid meas ures were not at that time in use among the apothecaries of America. That the amblyopia of the revisers was not deeper than that of their contemporaries is, however, shown by the following extract from a contemporary review of the National Pharmacopoeia in July, 1821: If the American Pharma copeia be adopted throughout the United States, as no doubt it will be, these modes of indicating quantities must neces sarily come into use, and that they will be continued after having been once introduced we do not hesitate to aﬂirm, because they are more definite and precise, and consequently safer, than the old methods. In such case it will be neces sary that the apothecaries be provided with the measures above mentioned.
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