Chemistry : general, medical, and pharmaceutical including the chemistry of the ; a manual on the general principles of the science, and their applications in medicine and pharmacy . gen to give it the propertyof turning green when placedin contact with iodide of potas-sium. Days test for mucusconsists in the application, first,of oxidized tincture of guaia-cum, which by itself undergoesno change in the presence ofmucus, and then in the additionof carbolic acid or creasote,which quickly changes the colorof the guaiacum to a brightblue. Neither carbolic acid Fat Globules. nor c
Chemistry : general, medical, and pharmaceutical including the chemistry of the ; a manual on the general principles of the science, and their applications in medicine and pharmacy . gen to give it the propertyof turning green when placedin contact with iodide of potas-sium. Days test for mucusconsists in the application, first,of oxidized tincture of guaia-cum, which by itself undergoesno change in the presence ofmucus, and then in the additionof carbolic acid or creasote,which quickly changes the colorof the guaiacum to a brightblue. Neither carbolic acid Fat Globules. nor creasote alone will render guaiacum blue. In testing for mucus on cloths, or when it is mixedwith blood, it is necessary to use the carbolic acid pure, but whenthe mucus is in a liquid state it is better to use carbolic acid dilutedwith alcohol. Saliva —Saliva is an aqueous fluid containing less than 1 percent, of solid matter, of which one-third is an albuminoid substancetermed jjtyalin (from 7ftv£%ov, spittle), a body that has power ofconverting starch into dextrin and grape sugar. Alkaline salts,including a trace of sulphocyanate of potassium, and calcareous com-pounds, are also Fig. 60. Fig. 61,
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