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This newspaper page contains 16 articles. Subscribers can read the full text of each article.
Newspaper
Cambridge Sentinel
Location
Cambridge, Massachusetts, United States of America
Date
Aug 03, 1907
Page
6
Spider lines are essential for calibrating micrometers in astronomy. At Allerheny Observatory spider threads, one fifth to one seventh of a thousandth inch wide, endure temperature changes and sun heat. Experts place parallel lines two thousandths of an inch apart using microscope magnification.
An invention by H. H. Ury of California adds a bulb operated shutoff on gas arms. The device cuts gas supply automatically if the flame goes out, preventing accidental poisoning.
The report explains a gas shutoff design where an inner tube sits on a steel point inside a circling ring. When heated by the flame the curved spring expands and releases the tube to rest on a counter point, acting as a safety catch. If the flame goes out, the spring contracts and the tube slips off to seal the gas automatically.
A Copenhagen University professor reportedly applied anaesthetics to plants, inducing a narcotized sleep-like state. After revival the plants sprout and bloom abundantly, a phenomenon not explained by known plant physiology, though observers confirm the results with ether and chloroform.
To locate the center of a ceiling rub chalk lines across from diagonal corners. Two people are needed. The crossing point marks the center, with adjustments if a chimney breast intrudes the room to avoid biasing the center.
A novel spring actuated rattrap designed to capture and kill various animals including mice rats and wolves. The device auto resets after each catch and ejects the trapped animal away from the mechanism into water to drown, ensuring quick disposal and uninterrupted operation.
Elias Carlson of Kalama Washington invents a two part logging hook that cannot accidentally unhook. The device uses two overlapping book members mounted on a bolt with shackles and swing axes parallel to the log team, allowing the hook parts to move toward each other when slackened.
A description of a two part hook assembly where two hook pieces lay at right angles and overlap to form a closed ring when swung shut. A spring keeps the parts closed, with a pin and slot limiting opening. The design eliminates projecting parts and places shackle ends outside to avoid snagging cables on brush.
A Scottish experiment uses kerosene oil stored in a base tank with a carbonic acid gas cylinder atop. An automatic flow delivers oil to a vaporizer, where it is gasified and burns with air to ignite an incandescent mantle.
A London Tit-Bits summary suggests light aids disease treatment. It cites a doctor who advises consumptives wear white clothes to let light penetrate the body, noting silk is unsuitable while blue is better than black red yellow or green which allegedly block germicidal rays.
A new German discovered metal tantalite has properties for an almost everlasting pen. It is so hard a diamond drill at 5000 rpm makes little impression and the metal can be rolled thin for resiliency. The pen resists wear and chemical ink, remaining functional under heavy use.
The article surveys biologists stance on natural death. Metchnikoff suggests immortality in single cell life forms. Naegell argues no natural death in plants. Loeb notes uncertain evidence, with some sea egg deaths possibly accidental. overall old age deaths appear caused by disease microbes.
A statistician predicts Berlin will be the world’s biggest city in fifty years with a population near 14 million, rivaled only by New York. He notes Berlin’s rapid growth surpasses other cities except Budapest and cites current Greater Berlin at over 3 million inhabitants. London is forecast to reach 7 million by 1953.
The Great Lakes yield many freshwater species with trout whitefish and herring as principal products. Notable values include sucker at 121576 dollars sturgeon 39994 yellow perch 19670 pike or wall eyed pike 407067 German carp 71285 and turtles 2472 in the latest fisheries report.
The material from New Guinea is described as fatty yellow clay rich in silicate oxides and aluminium with ferric oxide traces. It includes ammonia and small amounts of other substances. Minerology lists kaolin indrensillite and ferric oxide, and notes its taste and texture. The piece suggests testing its effects on fish diet and digestion.
At a Paris Academy of Sciences session Dr Imbert and Dr Marques described cases where hair previously white darkened under Roentgen exposure. A man treated for lupus showed near the ear hair turning almost black and later the mustache half darkened. They caution the mechanism is unclear and effects appear on hair directly irradiated. A second note describes a handy metallic ladder patent from Brooklyn, a light modular steel design with wire rod steps enabling quick length adjustment.
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