Word: powder
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...East Africa, the government has forbidden the killing of them there. A discovery which may furnish a better method of controlling the spread of sleeping sickness was announced recently by R. H. T. P. Harris, director of research in Zululand. He found the tsetse fly sensitive to pyrethrum (insect powder.) and veratrine (obtained from the root of the Indian poke). Especially effective was a .5% mixture of veratrine and cocoanut oil. Applied to a live animal, this mixture killed the attacking fly immediately. Since there are great stretches of land in Zululand which are unfit for agriculture, protesters are advocating...
...Alexandria, Va. Chamber of Commerce ordered from New Mexico 200 lb. of a chemical to make rain when sprayed on clouds from an airplane. Meteorologists said their "rain powder" would be about as effective as salt on a bird's tail...
Compared to other accessories of modern photography, the noise, smoke and smell of flashlight powder are anachronistic. General Electric told last week of a new fiashlamp, with smell, smoke and noise eliminated...
Instead of the old unwieldy magnesium powder pan, the new flashlamp looks like an ordinary incandescent bulb. Filled with oxygen, the bulb contains a specially coated filament and crumpled sheets of thin aluminum foil. When the circuit is closed the filament lights, ignites the aluminum foil. Each bulb is used only once. The lamp can be plugged in on an ordinary 115-volt alternating current circuit, or can be used with batteries. The flash lasts only 1/100 sec. Being completely self-contained, offering no fire hazard, the flashlamp can be used where flashlight photographs have never been taken before...
Aerocrete is made of Portland cement, sand and small quantities of lime, aluminum powder, soda. When poured out in thick liquid form, the presence of the aluminum powder in an alkaline solution causes a chemical reaction, liberates hydrogen, forms a cellular structure. Within a half-hour after pouring, aerocrete begins to puff up. At the end of an hour, expansion reaches its limit, the material hardens. By varying the amount of ingredients, expansion can be controlled, may vary from 50% to 150% of original volume...