If the ordinary
quantity were used far too much density was obtained, and the plate
ruined beyond recovery; but with so small a quantity of pyro. the
plate was not so much stained as with a larger quantity, and the
negative took far less time to develop on account of the intensity
being so readily obtained.
In making a gelatine emulsion with zinc it must be _decidedly acid_ or
it fogs. I prefer nitric acid for the purpose. I also found that some
samples of the bromide behaved in a very peculiar way. All went on
well until it came to the washing, when the bromide of silver washed
out slowly, rendering the washing water slightly milky; this continued
until the whole of the bromide of silver was discharged from the
gelatine, and the latter rendered perfectly transparent as in the
first instance. I remember a gentleman mentioning at one of the
meetings of the South London Photographic Society that he was troubled
in the same way as I was at that time. I think if a few experiments
were made in this direction with the zinc salt and worked out, it
would be a great advantage.--_Wm. Brooks, in Br. Jour. of Photo_.
* * * * *
DESIGN FOR A VILLA.
The villa of which we give a perspective drawing is intended as a
country residence, being designed in a quiet and picturesque style of
domestic Gothic, frequently met with in old country houses. It is
proposed to face the external walls with red Suffolk bricks and
Corsham Down stone dressings, the chimneys to be finished with moulded
bricks.
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