Word: tracings
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...they maintain their winter breeding reservoirs. Another is that they breed somewhere along the way, so that only later generations ever reach England. In last week's Nature, Geneticist H.B.D. Kettlewell of Oxford offered strong proof for the direct-from-Africa theory-using an atom bomb explosion to trace the flight of the gentle moth...
When cooled close to absolute zero, this core becomes superconductive, does not show a trace of electrical resistance even when placed in the strongest magnetic field that Bell Labs can generate, 88,000 gauss (the unit of magnetism). It can carry more than 1,000 times as much current as a copper wire of the same size at normal temperature. Bellmen believe that it can be coiled into a superpowerful electromagnet with a field of at least 100,000 gauss...
...unbroken line of Popes from the Disciple Peter to John XXIII underlies the Roman Catholic claim to be the one true church of Christ. But it is a complex line to trace-as is demonstrated in the Vatican's just-published, red-covered, 1,784-page Pontifical Yearbook for 1961. Missing from the new edition is Pope Stephen II, making Pope John the 261st Pope instead of the 262nd...
...booby-trapped with social snares and moral menace. At 24, he gets an appointment as assistant lecturer in mathematics at one of the new raw "red brick" universities in the English provinces. Starting writh this subject matter, Menna Gallie's brisk, garrulous and altogether charming novel serves to trace a few more lines on the meticulously mapped social topography of postwar Britain. New to this socially useful labor, Novelist Gallie adds a wonderful Welsh fluency, quite as awesome as the more widely notorious Irish gift...
...experimental animal in which the blocking of cytochrome synthesis would produce readily detectable effects. The Cecropia silk worm satisfied the requirement. During both the caterpillar phase and the period of adult development Cecropia produces substantial quantities of cytochromes. In the dormant pupa stage, though, the enzymes occur in only trace amounts. By showing that resistance to diphtheria toxin in the pupa stage is much greater than during other phases, Pappenheimer furnished compelling evidence for his theory...