Early Work In Photography
A Text-book For Beginners
Forfatter: W. Ethelbert Henry C. E., H. Snowden Ward
År: 1900
Forlag: Dawbarn and Ward, Limited
Sted: London
Udgave: 2
Sider: 103
UDK: IB 77.02/05 Hen
Illustrated with an actual negative and positive, and numerous
explanatory diagrams throughout the text
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Stocking the Darkroom.
77
a glass rod, stir up the mixture (which will at once becomea
bright yellow), and add enough water to make 7± ounces in all.
Uranium nitrate (or uranyl nitrate) is, like gold chloride,
extremely deliquescent, and soon becomes liquid it left
exposed to air; for this reason it is best to keep it as a
standard stock solution of known strength. To make it, add
120 grains of uranyl nitrate to four ounces of distilled water;
stir until dissolved, and then make up the bulk tosix ounces
with distilled water. Each ounce of this solution will contain
twenty grains of the nitrate. . TV
A lead-lined sink, such as was mentioned in Chapter IV.,
is almost a necessity in the dark room; but, for the con-
venience of those who have mechanical ability, and prefer
to make their own fittings, we give particulars of a convenient
sink described by Mr. F. W. Cooper in the May 1896 issue of
The Photogram. After a few preliminary remarks as to the
convenience of the arrangement, the writer says:
“The following materials will be required:—
No.
1. Cross pieces
2. Legs ...
Description
2 pieces of deal
4
4
1
3, Stays ...
4. Shelf ...
5. Top bar 1
6. Table top, &c 7
7. Tank bottom 2
8. Tank
sides
1
2
2
11
9
19
1
11
99
1
9. Lid battens
ilb. nails, ilin. 2in,. 3in. mixed wire
2 buckets (one a little larger than the other)
i yard best rubber tube, g bore
i small § gas tap +
4 sqr. ft. of 4 lb. sheet lead ) see below.
i ft. 1 lead pipe . )
i ft. 6 in. a lead gas pipe ...:
id smallest size copper tacks or zinc tack
11
in. in. ft. in.
3 X 3 4 X 3 6 planed
2} X 2, X 2 6 9
3 X 3 4 X I 4% 11
6 X I X 3 6 19
2 X 3 4 X 3 6 1
6 X , X 1 8 13
6 X - X I 6 1
3 X 3 4 X I 4f 11
2 X 1 X I 4 1
(French)
Cost
about.
s.d.
0 6
t o
07
0 4
0 3
12
o 8
05
0 2
0 2
18
... 0 8
... 0 6
... 0 3
0 1
The price of lead and outlet pipe is omitted because the
best way is to take the frame, when complete, to a plumber,
and get him to put a lead trough to the place made foi it,and
fix a niece of lead pipe as shown in sketch.
See that all the timber is sound and free from lai ge knots;
many people have spare wood at hand that can be cut to sizes
named and thus save the cost of purchase. .1
After all the material has been cut to sizes mentioned,
planed, and the edges made square, proceed as follows:-