REPORT OF THE SECRETARY 123 



Fogs and clouds, by W. J. Humphreys. 



Some aspects of the use of the annual rings of trees in climatic study, by 

 Prof. A. E. Douglass. 



The age of the earth, by T. C. Chamberlin and others. 



How deep is the ocean? by C. G. Abbot. 



Two decades of genetic progress, by B. M. East. 



Observations on a Montana beaver canal, by S. Stillman Berry. 



The Republic of Salvador, by Paul C. Standley. 



The tent caterpillar, by R. E. Snodgrass. 



The life history and habits of the solitary wasp, Philanthu* gibbosus, 

 by Edward G. Reinhard. 



The use of idols in Hopi worship, by J. Walter Fewkes. 



Two Chaco Canyon pit houses, by Neil M. Judd. 



Collections of Old World archeology in the United States National Museum, 

 by I. M. Casanowicz. 



The " Shake Religion " of Puget Sound, by T. T. Waterman. 



Excavations at Askalon, by Prof. J. Garstang. 



National efforts at home making, by F. H. Newell. 



Ideals of the telephone service, by John J. Carty. 



SPECIAL PUBLICATIONS 



The Smithsonian Institution (descriptive pamphlet), 7 pp. 



Title page and contents of Volume 62, Smithsonian Miscellaneous Collec- 

 tions. (Publ. 2716.) 



Title page and contents of Volume 72, Smithsonian Miscellaneous Collec- 

 tions. (Publ. 2706.) 



PUBLICATIONS OF THE UNITED STATES NATIONAL MUSEUM 



The publications of the National Museum are: (a) The annual 

 report, (b) the Proceedings of the United States National Museum, 

 and (c) the Bulletin of the United States National Museum, which 

 includes the Contributions from the United States National Her- 

 barium. The editorship of these publications is vested in Dr. Mar- 

 cus Benjamin. 



During the year ending June 30, 1923, the Museum published 

 1 annual report, 2 volumes of proceedings, 6 complete bulletins, 2 

 parts of bulletins, 4 parts of volumes in the series Contributions 

 from the United States National Herbarium, and 37 separates from 

 the proceedings. 



The issues of the bulletin were as follows : 



Bulletin 100, volume 5. Contributions to the biology in the Philippine Archipel- 

 ago and adjacent regions. — Ophiurans of the Philippine seas and adjacent 

 waters. By Rene Koehler. 



Bulletin 120. The opalinid ciliate infusorians. By Maynard M. Metcalf. 



Bulletin 121. Life histories of North American petrels and pelicans and their 

 allies — Order Tubinares and order Steganopodes. By Arthur Cleveland 

 Bent. 



Bulletin 122. A monograph of the American shipworms. By Paul Bartsch. 



Bulletin 123. Revision of the North American moths of the subfamily Eucos- 

 minae of the family Olethreutidae. By Carl Heinrich. 



