. Public health laboratory work, including methods employed in bacteriological research, with special reference to the examination of air, water and food contributed . decigramme weight is therefore removed andfive centigramme substituted—not enough ! A two centigramme weight further added, however,so extremely nearly establishes the required equilibriumthat the addition of another centigramme over-reachesthe mark. Three milligrammes are ultimately found necessaryto effect such an uniformity between the weights of thecontents of the two pans, that the index rests absolutelyin a central and ver
. Public health laboratory work, including methods employed in bacteriological research, with special reference to the examination of air, water and food contributed . decigramme weight is therefore removed andfive centigramme substituted—not enough ! A two centigramme weight further added, however,so extremely nearly establishes the required equilibriumthat the addition of another centigramme over-reachesthe mark. Three milligrammes are ultimately found necessaryto effect such an uniformity between the weights of thecontents of the two pans, that the index rests absolutelyin a central and vertical position. The weight therefore of the platinum dish is :—Seven grammes = 7 Five decigrammes = 0-5Seven centigrammes = 0-07Three milligrammes = 0*003 Total = 7573 grammes. 2. A platinum dish, capable of holding a little over100 of water. O LABORATORY WORK. 3. Two shallow porcelain evaporating dishes, holdinga little over 250 and 500 respectively (fig. 5). 4. A porcelain crucible with cover, for igniting resi-dues (fig. 6). 5. A white porcelain slab, about six inches by four. 6. Two white porcelain basins of about five inchesdiameter (fig. 7)..
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherphiladelphiablakis
