24 PROCEEDINGS OF THE BOSTON MEETING 



How small an army we need. [ Seen only in manuscript ; written in 1904 ; not 

 found in print.] 



Experiments on schistosity and slaty cleavage. United States Geological Sur- 

 vey, Bulletin number 241, 1904, 84 pages, 7 plates. 



Construction of geophysical laboratory. Carnegie Institution of Washington, 

 Yearbook number 2, 1903, 1904, pages 185-194. 



Present problems of geophysics. Science, new series, volume 20, 1904, pages 

 545-556. American Geologist, volume 35, 1905, pages 4-22. Engineering 

 and Mining Journal, volume 78, 1904, pages 743-744 (in part). •■ 



A feature of May on Volcano. Proceedings of the Washington Academy of 

 Sciences, volume 7, July 24, 1905, pages 277-282, plate 13. /■ 



Introduction to Day and Allen's "Isomorphism and thermal properties of the 

 feldspars." Carnegie Institution of Washington, Publication number 31, 

 1905, pages 5-12. 



Simultaneous joints. Proceedings of the Washington Academy of Sciences, 

 volume 7, 1905, pages 267-275, 1 plate. Engineering and Mining Journal, 

 volume 79, 1905, pages 1182-1184, 9 figures. 



Present problems of geophysics. Congress of Arts and Sciences, Universal Ex- 

 position, Saint Louis, 1904, volume iv, 1906, pages 508-522. 



Current theories of slaty cleavage. x\merican Journal of Science, fourth se- 

 ries, volume 23, July, 1907, pages 1-17, 6 figures. Abstract: Science, new 

 series, volume 25, June 21, 1907, pages 967-968. 



Methods of igneous intrusion. (Abstract.) Science, new series, volume 25, 

 April 19, 1907, page 622. 



Relations of radioactivity to cosmogony and geology. Bulletin of the Geolog- 

 ical Society of America, volume 19, June, 1908, pages 113-146. 



Age of a cooling globe in which the initial temperature increases directly as 

 the distance from the surface. Science, new series, volume 27, 1908, pages 

 227-233, 392. 



Origin of the gold of the Rand gold field. Economic Geology, volume 4, 1900, 

 pages 373, 384. 



Half a century in geology : progress made since Agassiz discovered the glacial 

 period. New York Times, Section of Astronomy and Meteorology, Sunday. 

 December 12, 1909. 



Relations between local magnetic disturbances and the genesis of petroleum. 

 United States Geological Survey, Bulletin 401, 1909, 24 pages, 1 plate. 



Halley on the age of the ocean. Science, new series, volume 31, March 25, 

 1910, pages 459-461. 



The age of the earth. Smithsonian Miscellaneous Collections, volume 56, 1910, 

 number 6, pages 1-28. 



Reflection on Joly's method of determining the ocean's age. Science, new se- 

 ries, volume 31, April 1, 1910, pages 509-512. 



Some new mechanical quadratures. Philosophical Magazine, volume 22, Au- 

 gust, 1911, pages 342-353. 



A new toy motor. Science, new series, volume 34, November 17, 1911, page 

 683. 



Biographical notice of Samuel Franklin Emmons. American Institute of Min- 

 ing Engineers, Bulletin number 57, September, 1911, pages 673-691, 1 plate. 

 (Portrait.) Idem, Transactions, volume 32, 1912, pages 643, 661, 1 plate. 

 (Portrait.) 



