Science and TechnologySource: The Scientific Monthly, Vol. 76, No. 6 (Jun., 1953), pp. iv-vPublished by: American Association for the Advancement of ScienceStable URL: http://www.jstor.org/stable/20481 .

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v Scienlce and T echnology t (From the Month's News Releases)

Acoustical Plastic Acoustical plastic, applied over existing ceilings, ab-

sorbs sound and provides insulation and fireproofing. The material's key component is vermiculite, a granu- lar rmicalike mineral that not only is incombustible but also retards the spread of flame. It is well suited for use in homes, offices, auditoriums, hotels, radio and TV studios.

Bibliography on Electrophoresis A comprehensive bibliography on clectrophoresis and

related analytical methods such as diffusion studies, absorption chromatography, and electrophoresis convec- tion, carefully organized for rapid and easy reference, will soon be made available to scientists and institutions, By the latest count, more than 2200 titles of papers whicbh have appeared in domestic and foreign period- icals are listed in the bibliography. The number of au- thors has passed the 2000 mark. The references range from those which date back to the earliest explorations in electrophoretic theory in the nineteenth century to papers appearing through mid-1953, It is planned to keep the basic bibliography up to date and to issue sup- plementary editions from time to time.

Floating Knife

For the Izaak Waltons is offered a knife that floats. The stainless steel blade is surrounded by 134" of cork anid on the back of the blade is a scaler for removing the scales from the fish. There is also sunk into this knife a shackle for attaching the knife to the fisherman's belt, so that it will be handy when needed.

Fountain Brush Now it's a fountain-type biush for washing your car,

hou.se, screens, storm windows, etc., without fuss or trmuss and int hialf the tine, Made of soft horsehair b)ristle, the brush is connected to your garden hose to give you a soakirng, scrubbing, rinsing operation all at one time, A rubber bumper around the aluminum head prevents scratching. A shut-off valve is built into the hose coupling on the handle. By turning the coupling, the valve regulates and shuts off the flow of water.

General Purpose Pump Imtprove(d pritnirug (IlalltLes aidl( in(Te3iSC(l pullmp out-

put with the saine power is the result of a new im- peller design, so says the maker. The pump case is rust- proof bronze, and the pump is available in three models e1/S .3/I, and I port sizes. Materials and desigit of

the equipmernt perrnit pumping of kerosene and fuel oil, Tt will handle dirty water without clogging and may be operated witti electric or gasoline rmiotors, or a trac- teor takecoff, The inanufacturer recomnmnends the pump

for farm, industrial, marine, and home use and lists such applications as laboratory and machine shop transfer pumping, silo draining, cistern filling, barn flushing, bilge pumping, and baserment draining.

Canal Liner A prefabricated canal liner has been developed that

protects against water seepage from irrigation systems, stock ponds, and reservoirs. It is nade of asbestos and asphalt and will. not rot or decay tunderground. The liner comes in easily installed rolls 3' wide conta'ining 108 sq ft per roll.

Scientific Packaging

A lined, cushioned bag has been designed to protect metal parts from rust and corrosion up to ten years, according to the manufacturer. Such protection is af forded by blanketing the metal with an invisible dry vapor. Moisture and air combine with the dry vapor, surround and cling to metal surfaces, and penetrate blind holes and cavities often overlooked in greasing. At the same time the cushioning protects the product from rough handling, dampness, and damage in transit. The bags may be ;narked for easy identification.

Itinerant Incinerator

A new addition to home ga:rdening equipment is a portable leaf burner. Mounted on wheels the burner provides a safe and convenient way to dispose of dry burnable refujse s-uch as leaves, papers, twigs, brush, and grass cuttings. It is constructed of heavy gage steel and is painted a bright aluminum to deter rust. The wheels are steel-based and are covered with wide rubber tires to prevent rutting of the lawn. The entire unit is so balanced that it can easily be pushed or pulled from place to place. A heavy gage steel ash collector is located below the burning basket to prevent scorcii- ing the lawn, arid dumping of ashes is accomiplished by tilting the handle of the burner upward.

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Simplified Solder Available now is an easily worked metal solder that

hardens without heat to form a permanent bond to metal, wood, plaster, glass, or plastic. Applied with a putty knife or similar tlool, the solder hardens in rela- tively short time and then may be filed, drilled, chiseled, ta pped, or ground and can be sanded to a smooth feather edge. The moldable solder is useful for filling holes and cracks in plaster, wood, tile, or concrete; for repairing leaky plumbing; for sealing leaks around wind- shields, doors, gas tanks, and other parts. Large-size packages are available for industrial use.

Versatile Recording Camniera A new low-cost recording camera is fully automatic

in operation, provicling f'or pulse operation up to four framnes per second. A special spring motor provides, with one winding, the exposure of 21 feet of 35 mm. film held in special cassettes. Both the exposure and film transport functions are effected by a single elec- trical pulse. Operating voltage is preset at either 12 or 24 volts DC. Five shultter speeds from 1/10 second to 1/200 second, and "tirne" exposure are provided. The standard lens furnished is of 36 mm. focal length, f/3.5 in a graduated focusing mount. Maniy other lernses are available.

Home Aids A plastic knob for kitchen ranges is designed to keep

children from turning on the gas range while playing. Unless firmly pressed in and then turned, the knob spins freely and does not open the gas valve. . . . Radiant ceramic heater can be safely placed in the household to beam warm infrared rays into "cold spots" or to warmn chilly rooms. The device itself, which can be plugged into ordinary household electric outlets, does not get hot enough to burn children's fingers or clothes. . . .Cold-food server set includes a food-holding cup that fits into a metal bowl which hlas a refrigerant sealed inside its walls. When chilled in a refrigerator freezing compartment to 10 degrees above zero or colder, the servers stay cold for a long time, making the set espe- cially good for serving ice creaml, slierbets, fruits, and shrirnp cocktails.

"Little Gem" Small parts storage is made easier with a cabinet

applicable for use in industrial plants, school shops, garages, home work-shops, as well as in all types of offices. "Little Gem" consists of two 1 2" high dlrawers in a one-piece welded f'rame, having an overall size of 11:" x 11" x 3/2/". Each drawer is furnished with 8 dividers, giving the cabinet a total of 24 adjustable compartments. Adding extra dividers makes possible a total of 56 compartments per unit. Tabs turn up and engage shelf above to prevent tipping when used as an insert in shelving. Any number of units may be stacked in one solid assembly.

\ Centennial

7i x lOj inches, double column, clothbound, 320 pages

Symposia presented to commemorate the first hundred years of AAAS include 42 papers by lead- ing scientists in thir- teen major fields:

* Sciences of Society * Educational Potentials * Human Individuality * Food and Nutrition * Housing * World Health Problems * Sources of Energy * The Upper Atmosphere * The World's Natural Resources * Genes and Cytoplasm * High Polymers * Interactions of Matter and Radiation * Waves and Rhythms

* Cash price to AAAS members $4.50 No4mem bers and institutions $5.00

A.A.A.S. Publicitions OR ER 1515 Massachusetts Ave., N.W. Washington 5, D.'C.

ffi Enclosed find my check or money order in the amount of $ . for . copy of Centennidl.

NAM E .. .. .................................... ADDRESS ............................................. CITY . ........... ZONE ..,. STATE .......

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