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CLASS A — Popular Science and Natural History
35
COURTESY
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camera catches them with a microscopic lens. They enclose themselves in cocoons, from which the complete fly soon emerges. Some very interesting highly magnified views of the fly's head, eyes, tongue and feet are shown. A fly is caught and made to walk across a plate of sterilized gelatin. When the gelatin is subjected to the proper temperature, germs begin to grow, showing that the fly has contaminated the plate. A very interesting, instructive, scientific and educational film.
1 Reel
Courtesy of B. H. DYAS COMPANY 2004
WILD ANIMALS OF THE ROCKIES
Wild animal pictures are always popular. Many fine films of this character have been produced, most of them showing lions, elephants, apes and other animals of Africa and India. This film is an ail-American feature. It might well be titled "See American Animals First." It shows intimate glimpses of a large number of animals, both large and small — some of them long shots, others closeups so distinct and clear that one feels as if one could reach out and stroke the fur of the creature on the screen. Deer, elk, buffaloes, antelopes (now almost extinct), mountain sheep and bears are shown in their native haunts. In addition to these large beasts, there are a number of interesting shots of smaller animals such as woodchucks, badgers, porcupines, coyotes, beavers and skunks, This film has a universal appeal. Don't miss it.
1 Reel
Courtesy of WESTERN SCIENTIFC CO., LTD. 2005-3
EYES OF SCIENCE
Of all the phenomena in the world nothing is more important or more interesting than light. Light has been the basis of many great scientific discoveries, practically all of which were built on observation and measurement. The purpose of this film is to show in an interesting way the methods used in manufacturing instruments for observation and measurement and the principles under which they operate. The picture shows how light rays are reflected by a mirror and refracted or bent by a prism. How a concave lens spreads the light rays apart and a convex lens brings them together is also shown. Then there is a diagram of the human eye showing how the images of objects are brought to a focus on the retina. The principle of the simple magnifying glass is explained and it is compared with a microscope that will magnify 2,000 times. The observer is taken to a factory where glass is made. The glass used for optical instruments is allowed to cool in the pot in which it was fused.
In the second reel workmen are shown removing the glass from the pot. It breaks into pieces which are carefully inspected. Only one-third of the contents of the pot passes inspection. The selected pieces are heated again and are worked roughly into the form desired, after which they are ground, polished, centered and mounted. A picture is shown of a microscope used in 1870, similar to the one with which Van Leeuenhoek first discovered microbes. This is compared with the greatly improved microscope of today.
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