92 REPORT OF THE SECRETARY, 



1687. The Influence of Physical Conditions in the Genesis of Species. By Joel 

 A. Allen. Octavo. Pages 375-402. 



1688. Parental Care Among Fresh-Water Fishes. By Theodore Gill. Octavo. 

 Pages 403-531, with plate i. 



1689. On the Relations between the United States of America and Germany, 

 especially in the field of Science. By Wilhelm Waldeyer. Octavo. Pages 

 533-547. 



1690. Walter Reed. A Memoir. By Walter D.. McCaw. Octavo. Pages 

 549-556, with plate i. 



1691. Rudolph Albert von Kolliker, M. D. By William Stirling. Octavo. 

 Pages 557-562, with plate i. 



The Acting Secretary's Report for 1906, forming a part of the Annual Report 

 of the Board of Regents to Congress, was printed as usual in pamphlet form 

 in November, 1906, for the use of the Board, and in January a larger edition 

 was issued for public distribution, as follows : 



1693. Report of the Acting Secretary of the Smithsonian Institution for the 

 year ending June 30, 1906. Octavo. Pages 91. 



There was also issued for the use of the Regents a small edition of the Pro- 

 ceedings of the Board. 



1743. Proceedings of Board of Regents for the year ending June 30, 1906. 

 Report of Executive Committee. Acts and Resolutions of Congress. Octavo. 

 Pages xi-li. 



The full report for 1906 was in type, although not ready for distribution at 

 the close of the fiscal year. 



1742. Annual Report of the Board of Regents of the Smithsonian Institution, 

 showing the Operations and Expenditures and Condition of the Institution for 

 the year ending June 30, 1906. Octavo. Pages i-li, 1-546, with 43 plates. 



The contents of the General Appendix are as follows : 



1744. The Smithsonian Institution. Octavo. Pages 97-102. 



1745. Modern Theories of Electricity and Matter. By Madame Curie. Octavo. 

 Pages 103-115. 



1746. Radioactivity. By Franz Himstedt. Octavo. Pages 117-130. 



1747. Recent Advances in Wireless Telegraphy. By G. Marconi. Octavo. 

 Pages 131-145. 



1748. Revisions of the Theory of Electrolysis. By H. S. Carhart. Octavo. 

 Pages 147-160. 



1749. Recent Progress in Astronomical Research. By C. G. Abbot. Octavo. 

 Pages 161-171, with plates I, n. 



1750. Astronomy on Mont Blanc. By H. Radau. Octavo. Pages 173-186. 



1751. The Problem of the Metalliferous Veins. By James Furman Kemp. 

 Octavo. Pages 187-206. 



1752. Iron Ore Reserves. By Charles Kenneth Leith. Octavo. Pages 207- 

 214. 



1753. The Geology of the Diamond and Carbonado Washings of Bahia, Brazil. 

 By Orville A. Derby. Octavo. Pages 215-221, with plates i, n. 



1754. The Eruption of Vesuvius in April, 1906. By A. Lacroix. Octavo. 

 Pages 223-248, with plates i-xiv. 



1755. To the North Magnetic Pole and through the Northwest Passage. By 

 Roald Amundsen. Octavo. Pages 249-273, with plates i-vi. 



1756. Iceland: Its History and Inhabitants. By Herr Jon Stefansson. Oc- 

 tavo. Pages 275-294. 



1757. The Recently Discovered Tertiary Vertebrata of Egypt. By C. W. 

 Andrews. Octavo. Pages 295-307. 



