New Machines and Gadgets Highlight Patented Innovations
The bulletin describes a handbag with built in flashlight and a side switch for illumination. It notes stomach magnet devices using electromagnets to retrieve swallowed metal objects, foldable umbrellas with folding ribs, desks stands with pencil holders and sharpeners, an electric room heater with oscillation, and a fire extinguisher on wheels for rapid field use. It also covers non corrosive carbine cartridge rims and a copper clad steel bullet sheath. Information requests via a stamp to Gadget Bulletin 188.
European holly gains in U S cultivation for Christmas use
An immigrant plant, European holly, thrives in the Pacific Northwest with glossy green leaves and bright red berries. Propagation now improves as cuttings root better when treated with indole acetic acid, a growth promoting substance.
MENTIONED IN THIS ARTICLE
Pacific Northwest
Lack of Manpower and Transportation Cuts Yale Evergreens
War demand shrinks Christmas tree supply by about half from prewar levels. Local harvesting remains common while larger markets rely on distant sources, with war limiting transport and manpower. Forest Service marked trees signal proper supervision, but fuel, rail car and labor shortages disrupt both small and large scale shipments.
MENTIONED IN THIS ARTICLE
U. S. Forest Service
New England
Atlantic Coast
Tiny Stream Bed Aids Flood Study At Rose Bowl
A miniature stream bed test near the Rose Bowl in Los Angeles County uses a one foot equals fifty feet scale canyon model to study flood crest impact and dam integrity. Researchers K. J. Bermel of the Forest Service and J. W. Johnson of the University of California conduct the experiments comparing a straight spillway to the designed curved dam.
MENTIONED IN THIS ARTICLE
Arroyo Seco
Rose Bowl
Los Angeles County
Calif
K. J. Bermel
U.S. Forest Service
J. W. Johnson
University of California
Junior Scientists Black Egg Turns to Silver Trick
A science demonstration shows an ordinary egg blackened with soot seeming to shrink and turn silver when submerged in water. The process uses soot to cover the shell and a light film of air at the surface to reflect light as the egg sinks.
MENTIONED IN THIS ARTICLE
Wiuid & le W
Science Service
Foods Frozen in a Flash
The flash-freeze machine developed in University of Texas labs cuts freezing time from 30 minutes to two to four minutes. Luis Bartlett, test engineer in the bureau of engineering research, notes the rapid method prevents large ice crystals and damage to food cells.
MENTIONED IN THIS ARTICLE
University of Texas Laboratories
Luis Bartlett
University
Bureau of Engineering Research
Sea Water Contains Only Little Copper
Copper is present in sea water but in minute amounts. Dr. Paul S. Galtsoff reports copper levels usually below 0.02 milligrams per liter, about less than two parts in ten million. Copper’s role is biological, aiding certain blood and larval oyster development.
MENTIONED IN THIS ARTICLE
Paul S. Galtsoff
U. S. Fish and Wildlife Service
College Park
H. F. Prytherch
Fixing a Dripping Faucet With Simple Tools
Water leaks from faucets waste water and stain surfaces. A new valve washer can be installed in minutes with a screwdriver and wrench. Shut off the main supply, locate the control valves, remove the top nut, and replace the washer. If the valve seat is damaged, a seat refacer can be improvised with a dowel and emery cloth to smooth the seat.
MENTIONED IN THIS ARTICLE
Science Service
Also Mentioned on This Page
Reson
Royal Canadian Air Force
N St
N. W
Washington, D C
Yale Evergreens
Frank Thone
Fic
Armed Services
Big Woods
White Mountains
New Hampshire
Washington, D. C
Red Cross
Oak Park High School
Chicago
American Red Cross
By Science Service
Science Clubs of America
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