PREFACE.
V
good results with little trouble, I have concluded to omit
the gas, which would increase the bulk of the Manual,
without a corresponding addition to its usefulness.
PREFACE TO FIFTH EDITION-.
The lime light, in an improved form, having been in¬
troduced into the Sciopticon, it has become expedient to
append to the Sciopticon Manual, a description of the
apparatus and directions for its use.
The demand for Lantern projections is steadily on the
increase. A fine photograph (and what can be finer?)
projected upon a large screen, before a thousand spec¬
tators, gives, it is safe to say, ten thousand times the
satisfaction that one alone with his stereoscope receives
from it. The appreciation is cumulative. “The more
the merrier,” is the philosophy of it.
The Sciopticon with its oil lamp, rather than with its
lime light, continues to be the choice of the many, be¬
cause its use is convenient and inexpensive. There are
purposes and occasions however for which the lime light
is a necessity. The gas therefore has now received its
full share of attention. Much of the added matter is
intended to assist those who have a Sciopticon, to pro¬
vide themselves with interesting objects for exhibition,
without resort to a large assortment of exoensive slides.