7. Alteration of the temperature of room, position of instrument, or
intensity of light while the observation or control observation is
being performed.
8. Performances of polarization with a cloudy, dim, or not completely
round or sharply defined field.
In closing this report the members of this commission hereby signify
their intention to promote uniformity and accuracy by adopting and
using the standards and general plan of procedure recommended in this
report in the polarimetric determinations over which, in their
respective branches of government work, they have control.
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