123 
The injurious effects which might have resulted, in fact 
would almost certainly have resulted from papering six 
rooms in a house with arsenical paperhangings, do not need 
enlarging upon any more than does the almost criminal fool- 
ishness of stating that such papers were free from arsenic. 
The second series of six samples which I have placed 
along with the six arsenical papers illustrates very con- 
clusively the fact that arsenical compounds are certainly 
not essential to the production of the colours required in 
the decoration of paper. These second papers were obtained 
from a Lond6n manufacturer to replace those which I have 
described, and will be seen to be so near them in shade and 
colour that in one or two cases it is difficult to perceive any 
difference at all. None of the second series of papers yield 
the least indication of arsenic with Marsh’s test, and there- 
fore entirely justify their warranty as free from arsenic, and 
were of course selected for use. We have therefore in these 
six self-tinted papers and the two-patterned papers, which 
I have also here, tints which alone or in combination will 
serve to demonstrate that any colour almost which is desired 
can be obtained without the addition of arsenic. If there 
is a difference in the appearance of the arsenical and non- 
arsenical colours, it is that the former are rather brighter. 
This however is not altogether a merit, for wall colours may 
very easily be too bright. 
It is to be regretted that non-arsenical paperhangings 
are at present, as a rule, somewhat dearer than the ordinary 
ones, but there is not much reason to doubt that this will 
be materially changed when the former are more largely 
made and used than at present. The cheapness of arsenic 
and its compounds is an unfortunate circumstance which 
favours its adoption, but when it is more generally acknow- 
ledged that the “brightness” yielded by these arsenical 
colours is not at all indispensable, this cheapness will not be 
an insuperable objection. 
