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Every one will agree with the author that a theoretical and practical knowledge of the construction of the prescription is of great importance to both physician and pharmacist. Dr. Wall seems to have gone more thoroughly into the subject than any previous writer. In regard to weights and measures he is particularly full and explicit, 36 pages of the book being devoted to this subject.
We cannot agree with the author, however, when he says: "It is wrong, for instance, to write 0.2 centigram, because many readers accustomed to using the metric system, would be apt to overlook the word centigram and read the above as 0 2 gram, which it would be if the figures stood alone without any designation. The above should be written 0.002 gram, or 2 milligrams;" or when he says: "Fractions of these values (centigrams and milligrams) should be expressed in prescriptions in common fractions,
The Prescription, Therapeutically, Pharmaceutically, and Grammatically considered.. JAMA. 1888;X(18):572. doi:10.1001/jama.1888.02400440032013