The Pharmaceutical era . MKlItlC OF TRACES OFMTItotS ACID.—To a solution of gm. of pureilrv silver nitrate in hot water, a slight excess of soilinmi-liloride is added, then after cooling the solution is di-luted to oni- liter. The iirecipitate is allowe drawn off andillluteil with distilled water to cuie liter. Of this solutionlIKt VI-. ,0,) are transferred to a llask andabout ,-! gm. of crystallized naiihlhionic acid added,fjdlowed by 5 to 0 drops of hydrochloric acid; afterNhaklng wi-ll rill drops of aqua ammnnla are addeil. Theabove rose culoretl solution


The Pharmaceutical era . MKlItlC OF TRACES OFMTItotS ACID.—To a solution of gm. of pureilrv silver nitrate in hot water, a slight excess of soilinmi-liloride is added, then after cooling the solution is di-luted to oni- liter. The iirecipitate is allowe drawn off andillluteil with distilled water to cuie liter. Of this solutionlIKt VI-. ,0,) are transferred to a llask andabout ,-! gm. of crystallized naiihlhionic acid added,fjdlowed by 5 to 0 drops of hydrochloric acid; afterNhaklng wi-ll rill drops of aqua ammnnla are addeil. Theabove rose culoretl solution is standanl for the aboveconceiilrallon. To Ihe sample of water to be examinetliia|>;- acid, acid and arjua ammoniaare addid. then Ihe intenaily of color compariHl with thealaiiilard solution. By iiieaiis of this lest na small aquHiillly as gin. of N,0, can be detected In 100 September 16, 1897.] THE PHARMACEUTICAL ERA. 371. Mome Stub\> in pbarmac^ INPEH THE DIRECTION OF J. M. B3^, ;., I> Ellas H. Bartley, , , Coblentz, , , Albert E. Ebert, , James M. Good. , Arthur L. Green, , Charles F. Heebner, , George B. Kau£Eman. , Henry Kraemer. , , LIST OF CONTRIBUTORS. Edward Kremers, Uri Lloyd, Oldberg, W. Parsons, L. Patch, »rge F. Payne, , D. Reed, , A. Ruddiman, , E. Sayre, , Wilbur L. Scovllle, Simon, , Sahli, E. Stewart, , W. Sturmer, A. Wall, , J. Wulllng, ,, LECTURE NO. 5. Chemical Notation and Nomenclature. Symbols and Valences of the Principal Elements. The classification given below is for the purpose of aid-ing the student in learning the symbols and valences ofthe


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Keywords: ., bookcentury1800, booksubjectdrugs, booksubjectpharmacy, bookyear1