REFERENCES 



Under this heading it is proposed to include, by author, title, and citation, references to scien- 

 tific papers published in or emanating from Washington. It is requested that authors cooperate 

 with the editors by submitting titles promptly, following the style used below. These references 

 are not intended to replace the more extended abstracts published elsewhere in this Journal. 



ASTROPHYSICS 



Abbott, C. G., and A-ldrich, L. B. On the use of the pyranometer. Smithsonian 



Misc. Coll., 66, No. 11. Pp. 9. 1916. 

 Clayton, H. H. Effect of short period variations of solar radiation on the earth's 



atmosphere. Smithsonian Misc. Coll., 68, No. 3. Pp. 18. 1917. 

 Coblentz, W. W. Application of the photoelectric cell as a pyrheliometer . Phys. 



Rev., (2) 9: See 572. 1917. 

 Merrill, P. W. Spectroscopic observations of stars of class Md. Publ. Astron. 



Obs. Univ. Michigan, 2: 45-70. 1916. 

 Merrill, P. W. A spectrum of the P Cygni type. Publ. Astron. Obs. Univ. 



Michigan, 2: 71-75. 1916. 

 Merrill, P. W. Discovery of two bright-line stars of class B. Publ. Astron. Obs. 



Univ. Michigan, 2: 181. 1916. 



GEOPHYSICS 



Bauer, L. A., and Swann, W. F. G. Results of atmospheric-electric observations 

 made aboard the Galilee (1907—1908), and the Carnegie (1909-1916). Carnegie 

 Institution of Washington, Publication No. 175, 361-447. 1917. 



Becker, G. F. Mechanics of the Panama Canal slides. U. S. Geological Survey 

 Professional Paper 98-N. Pp. 253-261. 1916. 



Jaggar, T. A. Live aa lava at Kilauea. Journ. Wash. Acad. Sci., 7: 241-243. 

 1917. 



Littlehales, G. W. In relation to the extent of knowledge concerning the oceanog- 

 raphy of the Pacific. Proc. National Acad. Sci., 2: 419-421. 1916. 



Marvin, C. F. Marine meteorology and the general circulation of the atmosphere. 

 Proc. National Acad. Sci., 2: 421-424. 1916. 



Merrill, P. W. The registration of earthquakes at the Detroit observatory during 

 the years 1914 and 1915. Publ. Astron. Obs. Univ. Michigan, 2: 165-177. 

 1916. 



Meunier, S. A theory of terrestrial volcanoes and the -geography of the moon. 

 Journ. Wash. Acad. Sci., 6: 637-649. 1916. 



Swann, W. F. G. On the origin of the earth's electric charge. Phys. Rev., (2) 

 9: 555-557. 1917. 



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