Each image in the book contains six frames of an animated scene. This 'strange' image is actually an entire animated scene precisely cut up and aligned using a predefined spacing template. (A special ruled screen is used as the spacing template). When the screen is placed onto the scene image, one complete frame of the animation sequence will be seen (single frame). When the screen is moved across the image, consecutive frames of the image sequence are shown in quick succession giving the viewer an apparent sense the image is moving on the printed page.
Originally (late 1800's onwards) this type of animation effect was used on large outdoor displays or advertisment boards. The animation on these mechanisms were usually limited to between 2 or 4 frames of animation usually simple 2 frame animations or alternating advertising messages. Manufacturing these structures to enable smooth animation or designing complex animating scenes would have been nearly impossible in those days.
[To be continued...updated 5th Oct.]
Available now in all good book stores
Magic Moving Images - animated optical illusions
by Colin Ord , ISBN 1899618740
Available at all good book stores now!