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Ditmars claims he wore the first gas-mask. Here he is, clad in olive colored rubber coat and wearing his mask, long before we began to speak familiarly of such a contrivance. He's filming wild skunks !
am doing it I am also working on half a dozen or dozen other subjects which may be completed almost simultaneously.
"The young of all animals, and the methods of the parents in caring for them, have my particular attention. The jealousy of the mothers, of which some writers make so much, offers but slight difficulties if we except certain species of deer the does whereof will fight to the death for their fawns. In general we find that the animal mother is just as proud of its offspring as is a human mother. In a den of wolves I found the mother-wolf frankly delighted 'with my presence; she and the cubs played around just iike friendly dogs as I prepared for the 'camera-shooting.'
"I couldn't accomplish much," continued the Professor, "if contented with the everyday appliances, lenses and rates of speed of the so-called "dramatic' motion picture work. For instance, one of the chapters in my 'book' shows a lizard eating flies. This sort of lizard sticks out' its tongue with almost lightning-like rapidity at its victim. The end of the tongue expands umbrella fashion, suction grabs the insect and holds it fast on the little tongue-platform till insect-carrier and insect are back within the jaws of the lizard. The whole operation takes but an instant, and you do not get it at all by the ordinary sixteen-pictures-per-second camera. I use a special machine taking thirty-two images per second, but project the positives in exhibition at the regular rate so that the operation can be seen in detail. On the other hand, many processes of Nature are so slow, so imperceptible in fact, that the camera eye must move very slowly over the field or else 'take' at intervals of five minutes or perhaps several hours or days in order to record the changes. Here again special equipment is necessary. For bird photography, telephoto, or telescopic, lenses are used. On the small work a beautiful ten-inch lens comes into play: its enormous light-giving and magnifying powers enable us to reproduce the tiniest of creatures in their marvelous activities. When engaged in special studies of the miniature world I use a camera so light that it can easily be carried on the palm of the hand and when in position on the tripod, controlled by the little finger.
"In taking outdoor scenes. I attach a camera to the tonneau of my automobile and throw in a few hundred feet of cable and an electric arc for the lighting purposes. Suppose, for example. I want to take the stridulations of the common katydid. A neighbor on a country road will accommodate me by letting me attach the cable to his electric switch.
Ask This Department
1. For information concerning motion pictures for all places other than theaters.
2. To find for you the films suited to the purposes and programs of any institution or organization.
3. Where and how to get them.
4. For information regarding projectors and equipment for showing pictures. (Send stamped envelope).
Address: Educational Department, Photoplay Magazine, Chicago
Presto! there's the Lighting and camera .ill set l"« hard part "t ii it the katydid, n.^ halm being to ting only in the dark and u> quit when the scene 1 illuminated 1 recall then that the katydid's lay is one ol courtship and tin exclusivel) .1 masculine one made to entice the female !>y a musical note caused by the rubbing together ol Lhi When one male katydid starts up, the others will join in and try i" outvie him. So 1 provide a lust) out
there in the near-by dark, and by and by my captive hekatydid, though in the, lull light ol the motion picture ar. , will begin to think that those other fellows arc putting something over him, and he will sing too.
"I've taken the camera into the rattlesnake dens in Connecticut and New York States and photographed the free reptiles and their young in action. 1 have filmed the wild ,;' the small game and even occasionally the bears in the Berkshires, the Catskills and northern Pennsylvania. But the
intensive study of the animal world can best be carried on in connection with a great and varied collection of animals such as the Zoological Park offers.
"In one of my reels 1 show a light to the death between a mongoose and a cobra. The mongoose, as is well known, is the poisonous snake-hunter, its importation into the United States is forbidden, and I had great trouble in obtaining a license for a specimen, which I subsequently returned to the Orient. The cobra repeatedly coiled itself and struck at the mongoose which dodged every attack. Ever the snake tried to bury its fangs in its four-footed adversary and ever the mongoose was too quick for him. At the death grapple the mongoose got around behind and bit the cobra in the tail; this caused the cobra head to rear up, and the mongoose jaws were upon it like a flash, inflicting the wound in the neck which ended the snake's struggles.
"Another film shows the swallowing by a python of a pig four times size. This sounds incredible. The explanation is that the python's jaws, instead of being attached each to the other like mammalian jaws, are divided above and below, and the orifice of the throat is also elastic, the bones coming away from each other as the muscles are
A scene from E. M. Newman Travel Picture released by the Educational Films Corporation of America, showing the Great Wall of China.