Quins investigate an invisible barrier . The glass in the door of the nursery at Callender , Ontario , provided an amusing half hour for the Dionne Quintuplets who were intrigued by the fact that they could see each other but not make contact . In this picture Yvonne and Annette ( on far side ) are seen feeling wonderingly over the glass whilst Emelie spreadeagled on the floor plays the role of interested spectator . 8 December 1935