Public health laboratory work, including methods employed in bacteriological research, with special reference to the examination of air, water and food contributed / by Rubert Boyce.

  • Kenwood, Henry R. (Henry Richard), 1862-1945.
Date:
1893
Catalogue details

Licence: Public Domain Mark

Credit: Public health laboratory work, including methods employed in bacteriological research, with special reference to the examination of air, water and food contributed / by Rubert Boyce. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

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    box will best show (fig. 4). The larger brass weights representing grammes, the next in size decigrammes, the nfext centigrammes, and small forceps are used for picking up and applying them to the pan. The milli- grammes are added by a little piece of bent wire, which is carried by means of a sliding rod moving just above Fig. 3.—Box of chemical weights. the level of one of the cross-beams, which latter will be observed to show ten markings numbered from one to ten. By sliding the rod which supports the bent wire up to, say the marking No. 5, and then turning it — n7 nj n7 0 HJ ' 0&/o-z/o-//o/ / Fig. 4.—Plan showing the arrangement of the weights in box. round by means of a screw, the wire may be made to ride upon that number, and the carrier can subsequently be withdrawn; five milligrammes of weight will then have been added to that side of the scales.