. Journal . now exactly what preservatives the food cimtains. Lawsrequiring ttiat the lalx-l should state the nature andquantity of preservative used may therefore fairlv bedemanded. How much farther the laws shoiUd gois a much mon- difficult question, and one which cannot DCafAL DOSE NORIAL DOSC. L£THAi. cose KMAL. Don FiO. 1.— Graphic chart, represcutinx the Ci>m(»arBtive iDfluenoe*of (oodi and procrvallvM.—^yUe||. The argument nmsisls in refenuces to the aecoin]>Hnyingdiagram (Fig. 1). which shows two curves—one for fowlsthe other for chemical , each running from thenorm
. Journal . now exactly what preservatives the food cimtains. Lawsrequiring ttiat the lalx-l should state the nature andquantity of preservative used may therefore fairlv bedemanded. How much farther the laws shoiUd gois a much mon- difficult question, and one which cannot DCafAL DOSE NORIAL DOSC. L£THAi. cose KMAL. Don FiO. 1.— Graphic chart, represcutinx the Ci>m(»arBtive iDfluenoe*of (oodi and procrvallvM.—^yUe||. The argument nmsisls in refenuces to the aecoin]>Hnyingdiagram (Fig. 1). which shows two curves—one for fowlsthe other for chemical , each running from thenormal dose to the lethal dose. The normal dose of thefomls is defined as that quantity of foixl which maintainsa healthy adidt body in ec|uilibrium. It is arbitrarilyn-pnstMited on the diagram by I(K1. The lethal dose offo<xl is stated to Ix zero. The normal of preserva-tives is « as zero, apparently on the groun<l thatthev are not natural constituents of foods. The lethaldosi- is that requin-d to ]iro<luce ileiith. and is representedon the diagram by lit. The arcunicnt is so obscure thatI lind it neiessary to quote the authors words: If youadd a very minute quantity of a chemical preservative,the curve representing It varies so slightly from the Vol. N
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
