Word: tars
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Twombley's boatyard in South Yarmouth, Me. is redolent of clam flats and hot tar, rife with the cries of greedy gulls and little children. At dockside, where scores of boat owners are polishing, scraping and painting, a World War II veteran, paralyzed from the waist down, rolls up to his 32-ft. cruiser in his wheelchair, pulls himself aboard, finds his screwdriver and gets to work...
Working with Dr. Dietrich Hoffmann at Manhattan's Sloan-Kettering Institute, said Dr. Wynder, he has found in the tar no fewer than 17 hydrogen-carbon compounds of the polycyclic group (i.e., with several carbon rings in the molecule). Nine have been exonerated, but to the six already known to produce cancer on the backs of mice the Wynder-Hoffmann team has added two more-3.4-benzfluoranthene and 10.11-benzfluoranthene. But these chemicals occur only in minute quantities in cigarette tar...
...enough to explain the recent startling increase in lung cancer. So, he argued, either there are other cancer-causing substances still undetected, or there is something that may seem innocent by itself but increases the effect of these cancer-stimulating factors. Laboratory research is now aimed at reducing the tar's content of polycyclic hydrocarbons, either by achieving more complete combustion or by adding a catalyst to the tobacco...
...smoker himself, Dr. Wynder despairs of persuading 55 million Americans to quit the habit. But to make it safer, he urges manufacturers to use low-tar tobaccos and the most potent filters they can find. For smokers themselves he recommends: try to cut down, inhale less, never smoke down to the butt-not more than half of a king-size cigarette-because 60% of the tar is in the last half...
LIPSTICK BATTLE is raging over proposed U.S. ban on 13 coal-tar dyes in lipstick coloring because tests show they injure animals. Almost all cosmetic makers who use the dyes claim they do not injure humans...