SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I3I 



20. Infrared and ultraviolet correc- Annals, vol. 5, PP- 103-110, 1932. 



tions for solar-constant work. 



21. Solar variation : Astrophys. Journ., vol. 19, p. 305, June 



1904. 



a. First suspected. Annals, vol. 2, pp. 98-103, II7-I79, 



1908. 



b. Clayton's contributions. Annals, vol. 4, PP- 36, 185, 367-374 



1922. 



c. From solar-constant work Annals, vol. 5, pp. 246-269, 1932. 



1 920- 1 930. 



d. Short up and down trends 



and ( I ) temperatures, 

 (2) ionosphere. 



e. Accompanying (i) hurri- 



canes, (2) magnetic 

 storms, 

 f. Accompanying sunspots. 



(i) Smithsonian Misc. Coll., vol. 95, 

 Nos. 12 and 15, 1936; (2) vol. 104, 

 No. 13, 1945- 



(i) Smithsonian Misc. Coll., vol. no, 

 No. I, and (2) No. 6, 1948. 



Smithsonian Misc. Coll., vol. no, No. 



6, 1948. 

 Annals, vol. 7, pp. 165-168, 1954. 

 (i) Smithsonian Misc. Coll., vol. 104, 



^>o. 3, 1944; vol. 116, No. 4, 1951 ; 



(2) vol. Ill, No. 13, 1949. 

 h. Long periodic and weather. Smithsonian Misc. Coll., vol. 122, No. 



4. 1953- 

 Smithsonian Misc. Coll., vol. 122, No. 



4. 1953- 

 Smithsonian Misc. Coll., vol. 128, No. 



4. 1955- 

 Smithsonian Misc. Coll., vol. 128, No. 



3. 1955- 



23. Defense of our solar-constant Annals, vol. 4, pp. 3.-'3-366, 1922. 



value (Abbot, Fowle, Aldrich). 



24. Brightness of the night sky. Astron. Journ., vol. 27, No. 3, pp. 17- 



24, June 20, 1 911. 



25. Direct and scattered radiation of Astron. Journ. vol. 28, No. 16, pp. 129- 



sun and stars. 135, March 1914. 



26. Tower telescope on Mount Wilson Annals, vol. 4, pp. 217-257, 1922. 



and solar-drift curves. Smithsonian Misc. Coll., vol. 78, No. 5, 



1926. 



27. Nature of the sun's sharp Scientia, vol. 19, pp. 171-181, March 



g. Periodic — (i) 27-day, (2) 

 6.6485-day. 



22. A large family of periodic varia 

 tions: 



a. In the sun. 



b. In the weather. 



boundary. 



28. Volcanoes and climate. 



29. Summary of the work of the As- 



trophysical Observatory, 1890- 

 1 920. 



30. Radiometer measurements of stel- 



lar-energj' spectra. 



1916. 

 (See also Abbot, C. G., "The Sun," 



1911.) 

 Smithsonian Misc. Coll., vol. 60, No. 



29. 1913; vol. 65, No. 9, 1916. 

 Annals, vol. 5, pp. 1-5, 1932. 



Astrophys. Journ., vol. 50, pp. 87-107, 



1924. 

 Astrophys. Journ., vol. 69, pp. 293-311, 



1929. 



