Glass funnels,
Filtering paper,
A balance scales for weighing 1 grain to 1/4 lb.
The developing tray is made of japanned iron, of ebonite or of hard
rubber.
[Illustration: JAPANNED IRON DEVELOPING TRAYS.]
These are all made to suit the various sizes of plates in use; the
japanned iron trays are the cheapest, but they wear out rapidly; the
ebonite trays are rather [p169] higher in price, but they are
more durable, and have a clean polished surface. The hard rubber
dishes are the most expensive, and perhaps the most durable.
[Illustration: EBONITE TRAYS.]
[Illustration: ANTHONY'S GLASS BATHS IN BOXES.]
The amateur should procure his trays of a size suitable for the
largest plate he uses, and should have two or more on hand always
for developing purposes. These dishes are also suitable for the
clearing and fixing solutions; but for these solutions the upright
bath dish and dipper are better for several reasons; first, because
there is less evaporation; second, all sediment sinks to the bottom,
and the solution is always clean; and last, but not least, they take
up less room.