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Popular Mechanics Co.

"The Boy Mechanic: Volume 1 700 Things for Boys to Do"

To the front board is attached a box,
carrying the lens and the bed of the sliding object carrier, which
can be moved forward and back by the rack and pinion, that also
can be obtained from hardware stores. If the bed for the object
carrier be attached to the bed of the camera instead of to the
front board, the object carrier need have no independent movement
of its own, focusing being done by the front and
[Illustration: Enlargement with a Camera]
back focus of the camera; but this is less satisfactory,
particularly when accurate dimensions are to be determined, says
the Photographic Times. This outfit need not be confined to seeds
alone, but small flowers, earth, chemicals, insects, and the
thousand and one little things of daily life--all make beautiful
subjects for enlarged photographs. These cannot be made by taking
an ordinary photograph and enlarging through a lantern. When a
gelatine dry plate is magnified nine diameters, the grains of
silver in the negative will be magnified also and produce a result
that will not stand
[Illustration: Magnified Nine Diameters]
close examination.


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