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10. The Isolation of radium followed by many important investigations made on other previously unknown elements proved to be of great importance.
20. They expected the acceleration to be different weights but this was not the case.
43. The data thought to represent the results are sure to be obtained in practice.
46. The substance reported to dissolve in hot water was thoroughly tested.
47. Substances thought to possess the property in question were thoroughly investigated.
50. All these elements are radioactive, their atoms being unstable and undergoing spontaneous disintegration.
51. A new technique having been worked out, the income rose.
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