JB/169/223/002

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6

1. Preservation in point of colour

The air in conjunction with the light and sometimes
without it produces various changes in the colours
of bodies. If such be kept in an exhausted
chamber at such times as their use use will admit
of their being thus kept in an exhausted chamber & in darkness if required their colours will remain
during such time unfaded changed. The Contents of
what the dyers call an Indigo vat for example
after being brought to a proper state for being applied
as a dye, is so much injured by exposure to the
air as that a considerable part sometimes becomes
unfit for use before it can be applied. if
the action of the air be taken away no such
alteration will take place

In this manner Thus tarnishing fading or and <add>othersuch like changes of colour</add> may be
prevented.

Identifier: | JB/169/223/002 "JB/" can not be assigned to a declared number type with value 169.
Date_1		Marginal Summary Numbering
Box	169	Main Headings	panopticon versus new south wales
Folio number	223	Info in main headings field	exhaustion
Image	002	Titles
Category	text sheet	Number of Pages	2
Recto/Verso	recto	Page Numbering	d1 f5 / a7 f6
Penner	jeremy bentham; samuel bentham	Watermarks
Marginals		Paper Producer
Corrections		Paper Produced in Year
Notes public		ID Number	57043
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