Series of reports on research in meteorology and oceanography conducted in the Department of Meteorology and Oceanography.

The underlying concept of the paper is that the amount of precipitation required for the near-normal operation of the established economy of an area during some stated period is dependent on the average climate of the area and on the prevailing meteorological conditions both during and preceding the month or period in question. A method for computing this required precipitation is demonstrated.

February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index

Vols. 10-11 include Meteorology of England by James Glaisher as separately paged section at end.