faint cutting on glass or crystal go over the lines with 'China ink
in a pen, so as to cover them. Harden the ink in the sun, and then
gently wipe with a damp finger until all the excess is removed and
only the roughness of the lines remains black. On large objects light
dust or sand is often useful, to make relief clearer.

For objects in a bad light, or in the interior of tombs, reflected
light must be used. Lids of biscuit tins serve well; a lid in the sun
sixty feet off, and another lid reflecting the light on to a wall,
will suffice for a two minutes' exposure of a slow plate. Three or
four successive reflections into a totally dark chamber will suffice
in five or six minutes.

When an important subject cannot be revisited it is well to take
duplicates; the camera should be shifted laterally a few inches for a
near object, or a few feet for a distant view, and then the two films
will form a stereograph, if both succeed.

In arranging groups of small objects, put together what will go in a
three-inch circle, and minor pieces around, and then the best in the
middle can be printed direct on lantern slides.

7. Preservation and Packing.

While travelling little can be done for preserving objects. Papyrus
rolls should be wrapped at once in a damp handkerchief, to be
carried, and then wrapped in paper, packed in a tin box, and filled
round with cotton wool. Small papyri can be safely damped in a wet
cloth, and flattened out between the leaves of a book; secure one
edge straight in the hinge, and gradually press flat and secure by