Sixth, the concept of projection was important for motion pictures, although in the original Edison-invention, projection was lacking. In 1851, onwards, when the projection of photographic slides became possible, the magic lantern became wildly popular, and the industry started to grow quickly. (Michaelis, 1958; Musser 1990: 30-36). A few specialised British and French slide suppliers dominated the trade. They collected photographs from all over the world in London or Paris, and distributed them