Summary: This study is based on the secular precipitation series of this country extending from 1871 to 1973, and it is dealing with the sequences of wet and dry months. The secular precipitation series has been obtained in the following way. The monthly sums of precipitation on 10 stations, which are covering rather uniformly the area of the country, have been averaged. This series is reproduced in Table I. The statistical investigations (the results of which are listed in Tables II—VII) are indicating that periods consisting of wet and dry months are occurring, in this country, at a random manner, with the only exception that the sequences of consecutive summer half-years having the same sign of anomalies are possessing a closeness of relation which slightly exceeds the random value.

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