New Machines and Gadgets Featured in Bulletin
An array of new devices is showcased including an egg opening tool with hinged handles, a spherical LNG storage vessel with a corrugated metal membrane, and an echo sounder using a quartz crystal to measure depth. Also described are tool steel, a self limiting screw driver, compact powerful electronic tubes, a 200 kilowatt transmitter tube, a tiny hearing aid tube, a versatile home power tool, a skck machine for gear options, and a winding tool for fishermen.
Liver-Leaf Hepatica and the Old Medical Belief
Hepatica, a bright spring flower with three-lobed purplish leaves, earned the name liver-leaf from herbalists who linked plant parts resembling human organs to organ-specific cures. The term hepatica echoes this ancient idea in Greek, reflecting outdated medical doctrine.
New Gradient Tube Method Tests Density With One Drop
The article describes a gradient tube method to measure density using a single drop. A long glass cylinder holds layered liquids. a lighter liquid flows atop water, and two drops of known and test densities are compared. The method applies to milk, oils, sugars, blood serum, and hemoglobin in minutes with a single drop.
MENTIONED IN THIS ARTICLE
E. D. Tillyer
H. R. Moulton
American Optical Company
Science Service
Oliver H. Lowry
New York City
Public Health Research Inc
Thomas H.ee
Stem End Indicators Predict Lemons’ Shelf Life
E M Harvey of the U S Department of Agriculture notes that lemon stem end color can forecast storage potential. Bureau researchers offer handling tips for the industry as harvests move earlier in the year. Light-green lemons picked in February stay fresher than those from May, with about 30,000 carloads harvested and shipped annually, some stored for three months.
MENTIONED IN THIS ARTICLE
E. M. Harvey
U. S. Department of Agriculture
Bureau of Plant Industry, Soils and Agricultural Engineering
Live Oak Society Dues and Size of Acorns
The Live Oak Society requires yearly dues of 25 acorns for membership. Trees must be 100 years old or older, with a 17 foot girth at four feet above the roots as a conservative age proxy. The Locke Breaux Oak near New Orleans is the society’s largest member, 75 feet tall with a 35 foot girth and 166 foot spread.
MENTIONED IN THIS ARTICLE
Live Oak Society
Hahnville
New Orleans
Edwin L
Southwestern Louisiana Institute
Lafayette
Mississippi
Texas
Also Mentioned on This Page
N St
N. W
Washington, D. C
Dean A. Lyon
Naval Gun Factory
Lyon
H.dennis Taylor
Bausch & Lomb Optical Company
F. H. Nicoll
Radio Corporation of America
John Strong
California Institute of Technology
C. Hawley Cartwright
A. F. Turner
Massachusetts Institute of Technology
Naval Research Laboratory
Anacostia
D. C
Germany
Fremont Davis
Eastman Kodak Company
Bausch & Lemb Optical Company
By Joseph H. Kraus
Science Clubs of America
Odrop
Propper
Rutherford Boyd
Columbia University
Scripta
Society For Trees
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