Contents:
Angler, Life history of; by Theodore Gill.
Archeology, American, Contributions of, to human history: by W. H. Holmes.
Cinclus, Birds of genus, and their geographical distribution: by Leonhard Stejneger.
Fern of genus polypodium. New species of, from Jamaica: by W. R. Maxon.
Glacial studies in Canadian Rockies and Selkirks, Smithsonian expedition of 1904, preliminary report: by W. H. Sherzer.
Landshell, New Philippine: by Paul Bartsch.
Notes [including Recent publications of institution continued from list. Feb. 1905. no. 1558].
Photographing on wood for engraving: by T. W. Smillie.
Shells, land and fresh water, collected in Bahamas in 1904 by Owen Bryant and others. Report on: by W. H. Dall.
Solar radiation measures by actinometer and by spectro-bolometer. Discrepancy between: by F. E. Fowle, jr.
Swiftlet, new, from Mount Kina Balu, Borneo. Description of: by C.W. Richmond.
Title page, contents, and index to v. 47.