(Collins, London. $10.50).
"Atomic Nuclei" by Dr. Moon, of Birmingham, gives a resume of recent work in this field. The ninety-two elements of 1900 had expanded to two hundred different nuclei in 1934, and in the last five years progress has been so rapid that more than three hundred radio-active nuclei alone are known. The formation and stability of some of these are dealt with in detail and the article is well illustrated by two very clear diagrams.
Text read from the printed page and cleaned; old type leaves the occasional error.