Catalogue of Magic Lanterns, Stereopticons, Projection Apparatus

The scientific investigator, the educator, the lecturer and he who simply caters -to the higher amusement of the public, find in the stereopticon an indispensable aid. In its improved form most delicate investigations into chemical, physical, electrical and pathological phenomena are possible; and what is of most importance, the method of conducting such research, and its immediate results can be shown to an audience as easily as to a single individual. The educator can illus trate in the most effective manner by its aid, Physiology, Botany, Natural History, Chemistry, etc.

The rapid introduction of electricity for general lighting purposes has greatly increased the use of. The stereopticon in places where the best results are desired, whereas heretofore the expense prohibited the frequent use of the oxy-hydrogen light.

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