All About Inventions and Discoveries
The Romance of modern scientific and mechanical Achievements

Animated Pictures 327 interrupted the rays of light while the one picture was moved from its position before the lens to allow its successor to come into position, in precisely the same way as the light is cut off between each picture in the apparatus of to-day. When the picture had passed the lens it was withdrawn from the frame and another inserted, this cycle of operations being continued until the last picture in the series had been projected upon the screen. Heyl even introduced humour into his novel enter- tainment, the subject which provoked the audience to mirth being an excited figure of Brother Jona- than ” delivering a protest. In this instance an asso- ciate concealed behind the screen spoke the words, and in tones he would have assumed had he been acting openly before the audience. The expressions and the lip-movements were observed to be so coin- cident with the utterance of the words that the audience was moved to enthusiastic applause. But Heyl’s invention was premature and too un- wieldy to be considered a commercial undertaking. It proved a popular “ turn ” wherever it was shown, but its success was short-lived. Still, Heyl succeeded in exercising other minds who were impressed with what he had accomplished, noted its appreciation by the public, and who immediately embarked upon the study of ways and means of achieving a similar end more effectively, with greater simplicity, and com- mercially. , . , , Yet Heyl had merely adapted a toy which has ever been popular in the nursery to the exigencies of entertainment for one and all. The “ Zoetrope is well known, and the young mind as he peeps