SPECIAL ARTICLES.—History of radio in relation to work of Weather Bureau; by E. B. Calvert.—Meteorological stations in high latitudes; by Sir Frederick Stupart.— Frequency distributions of daily and hourly amounts of rainfall at Galveston, Tex.; by I. R. Tannehill.—Lowering of Kansas River channel at Topeka, Kans.; by S. D. Flora.—Snowfall and run-off of upper Rio Grande; by Charles E. Linney.—[H. C.] Frankenfield on spring floods of 1922 [in Mississippi drainage basin, abstract; by] Alfred J. Henry.—Amazon River flood, by Dr. Hagmann; extract translated [by H. C. F.].—Frost-fighting in Pecos Valley [N. Mex.; by] Cleve Hallenbeck.