NOTE.—Special articles are—
Atmosphere, Problems of: by James Dewar.
Atmospheres of the sun and the earth, Studies on circulation of, by F. H. Bigelow; 3. Problem of general circulation of atmosphere of the earth.
Costa Rica. Climatology of: by H. Pittier.
Earthquake of .Ian. 20, 1904, at Washington, D. C; by C. F. Marvin.
Frederick. Julius R.: by D. J. Carroll.
Hawaii, Annual climatological summary for; by R. C. Lydecker.
Lightning rods. Arrangement of; by W. S. Franklin.
Lunar halo of Jan. 30, 1904: by F. L. Odenbach.
Meteorology. Recent papers bearing on; by W. F. R. Phillips.
Nephoscope, New; by Louis Besson.
Tornado at Moundville. Ala.; by F. P. Chaffee.