NOTE.—Summary of weather and river and flood reports from all parts of the United States, with notes covering other countries and various topics of meteorology. Special articles are— Costa Rica, Climatology of; by H. Pittier. Hawaiian climatological data; by C. J. Lyons. Meteorology, Recent papers bearing on; by W. F. R. Phillips. Sunshine, Measurement of, and preliminary examination of Angstrom's pyrheliometer; by C. F. Marvin.