" An] excellent study of the bristlecone pine (Pinus aristata Engelm.) from the White Mountains of California . . . Many aspects of tree growth and a multitude of growth factors are considered in great detail. . . . An intensive study was made of six small, rather young trees using dendrographs, dendrometers, soil-moisture units, weather-recording instruments, and cambial sampling for the years 1962, 1963, and 1964. . . . The author has done an enormous amount of work in statistics, botany, and ecology."--Arctic and Alpine Research