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At the beginning of the 1880's E. A. Brikner established that climatic conditions, over almost the whole land surface of the globe, underwent cyclic fluctuations. In each cycle, of duration about 35 years, a period of humid and cold years is followed by one of dry, high-temperature years. The climatic fluctuations discovered by Brikner do not always show up distinctly. In some periods they have been well marked, in other periods weakly marked or quite absent. Hence doubts have arisen about the existence of the Brikner cycle. (Author), Trans. of Priroda (USSR) v54 n2 p78-9 1965. Also available from NRC.