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MCINTOSH BATTERY AND OPTICAL CO., CHICAGO, ILL., U. S. A. 3 adapted to while away the long dreary evenings in stormy weather when people are so apt to find time hang heavily on their hands. The young people can receive valuable help in forming a refined taste for art by the exercise of care on the part of the older mem- bers of the family, in the selection of slides. The Sciopticon has not been so generally introduced into the family in this country as in Europe. The cheap and worthless instruments offered for parlor enter- tainments have caused dissatisfaction and have been cast aside. As soon as the public, generally, becomes aware that a cheap and satisfac tory apparatus is manufactured, there is no question but that this form of home entertainment will be more generally appreciated. Many ladies who have become expert in amateur photography entertain their friends at home with the products of their “ summer outing ” in the form of views which they have taken of the objects and places of interest discovered in their trip. These can be so readily transformed into beautiful lantern transparencies that this art has become a fascinat- ing recreation to those willing to take the trouble to acquire the simple but necessary details of the process which will be found described in this catalogue. Advertising Stereopticons have become a popular method of bringing advertisers to the attention of the public. Properly managed, this is lucrative both to the exhibitor and his patrons. The business card of advertisers being displayed singly and re- peatedly while the interest of the observers is sustained by interspersing beautiful views of scenery and comic pictures, makes an impression on the memory which is less likely to be forgotton than when seen in an ordinary printed circular, on a picture card, or in a newspaper column. Amateur photography has done away with the only obstacle hitherto in the way of the success of this business ; the cost of repro- ducing the business card, place of business or samples in the form of a lantern transparency is reduced to a trivial sum, and there need be no delay in doing the work. It would be difficult to find any apparatus or instrument capable of furnishing such a variety of entertainment and instruction as a good Stereopticon. Late improvements have greatly simplified the methods of producing a brilliant light, with due regard to safety and economy, and all persons interested in the art of Projection are cor- dially invited to communicate with us in regard to the subject.