instrumentality of the Royal Hcy te : 
as —— into the Colony ; and I trust “eg sna cay be allowed es : 
160 THE RISE AND PROGRESS OF PHOTOGRAPHY. 
and mounting ; they ene all the fine detail of the silver print 
and are perfectly permanent. Time would not allow me to enter 
in this process, but we may weasonably — that before very 
upon separate stones. The chromist hear commences his work, 
taking off from each stone such portions of the work as he does 
not require, 2 ‘ait aoe required adding to the work; when all 
and seorneily less expense in the gett 
Photo-chromography is practised in various ways, of which 
the following I consider to be the best :—Say 5,000 joapressions 
are 
negative by means of the Woodb rocess. A 2 bloe 
is then made, composed of the colours required ; the same number 
of prints are made from this block as from the negntire; printed 
f 
on an especially neces tae paper. When both impressions are 
dry they are brought into contact and held — in their 
ces by a weak solution of gelatine. When again dry 
forming one picture, and have been produced by only two prim 
ings, which forms one of the most important features in the 
I wiah to remark that the observations I have made on these 
processes have only been such as to give the outlines of them, 
and are not intended as ridtisal details, as it would be impos-— 
sible in a paper of this a escription to enter into anything m 
than a general and brief review of them ; but, ni Pre of 
the place they occupy in photographie : literature, nsidered 
roe + might be interesting to this Society to he hear something - 
66 Heats from me, as I am aware ue 3 — sak tron 
