Word: acidity
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Dates: during 1940-1949
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Nobody knows exactly why teeth decay. Dentists generally agree on one clue to the mystery: certain acid-forming bacteria, such as lactobacilli, grow on tooth enamel, ferment crumbs of sweet and starchy foods which lodge in tooth crevices. The acid thus formed dissolves calcium in the teeth, causes cavities...
...urea, a nitrogen compound. Dr. Stephan found that two groups of antagonistic bacteria flourish in saliva: 1) the destructive lactobacilli; 2) harmless germs of the staphylococcus family. By brewing an enzyme called urease. the staphylococci split up urea in the saliva into an ammonium compound, which neutralizes the erosive acid. Dr. Stephan's conclusion: teeth may decay when the saliva does not contain enough urea, or when the staphylococci are sluggish...
...Passion (by Edward Chodorov & H. S. Kraft, produced by Richard Aldrich & Richard Myers). Advance notices hinted that this play was about Sinclair Lewis and Dorothy Thompson. The hint can be disregarded. The drama begins as an acid study of the relations between a jaded, unsavory novelist (George Coulouris) and his wife, part journalist, part demon, played by sinister Gale Sondergaard, whose performances here and in the cinema (The Letter) mark her as the female viper of the dramatic year...
...predetermined the sex of 1,800 rats. At the same time, Dr. Leon Jacob Cole of the University of Wisconsin reported that, with his rats and rabbits, the system failed to work. Another independent worker, Dr. John Henry Quisenberry of the Agricultural and Mechanical College of Texas, found that acid and alkali douches worked with rabbits, not with rats...
...cats, dogs, horses, cows, and even mink. But experiments on human beings have been few and far between, for most doctors find it hard to take the baking soda seriously. Fortnight ago, Captain Patterson hailed a young couple in The Bronx, Mr. & Mrs. Maurice Hamton, who tried lactic acid and baking soda douches, and got what they ordered: first a girl, then a boy. The Daily News's Sex Control Editor" was forthwith deluged with letters and phone calls, answered cautiously that he could give no specific instructions for human beings. Captain Patterson couldn't be sure that...