VI CONTENTS. 



Page. 



Appendix I. Report on the United States National Museum 36 



II. Report on tbe Bureau of American Ethnology 44 



III. Report on the International Exchanges 53 



IV. Report ou the National Zoological Park 62 



V. Report on the Astrophysical Observatory 68 



VI. Rei)ort ou the Library '''3 



VII. Report on the International Catalogue of Scientific Literature- 77 



VIII. Report on the publications 79 



REPORT OF THE EXECUTIVE COMMITTEE. 



Condition of the fund July 1, 1908 87 



Receipts and disbursements, July 1, 1907, to June 30, 1908 88 



Summary of appropriations by Congress 90 



PROCEEDINGS OF BOARD OF REGENTS. 



Meetings of December 3, 1907, January 22 and February 12, 1908 92 



ACTS AND RESOLUTIONS OF CONGRESS. 



Acts of Sixtieth Congress, first session, relative to Smithsonian Institution and 



its branches 102 



GENERAL APPENDIX. 



The present status of military aeronautics, by Maj. George O. Squier, U. S. A. 117 



Aviation in France in 1908, by Pierre-Roger Jourdain 145 



Wireless telephony, by R. A. Fessenden 161 



Phototelegraphy, by Henri Armagnat 197 



The gramophone and the mechanical recording and reproduction of musical 



sounds, by Lovell N. Reddie 209 



On the light thrown by recent investigations on electricity on the relation be- 

 tween matter and ether, by J. J. Thomson 234 



Development of general and physical chemistry during the last forty years, by 



W. Nernst 245 



Development of technological chemistry during the last forty years, by O. N. 



Witt '. 255 



Twenty years' progress in explosives, by Oscar Guttmann 263 



Recent researches in the structure of the universe, by J. C. Kapteyn 301 



Solar vortices and magnetism in sun spots, by C. G. Abbot 321 



Climatic variations: their extent and causes, by J. W. Gregory 339 



Uranium and geology, by John Joly 355 



.Vn outline review of the geology of Peru, by George I. Adams 385 



Our present knowledge of the earth, by E. Wiechert ^ 431 



The antarctic question — Voyages since 1898, by J. Machat 451 



Some geographical aspects of the Nile, by Capt. H. G. Lyons 481 



Heredity, and the origin of species, by Daniel Trembl)'^ MacDougal 505 



Cactace;e of northeastern and central Mexico, together with a synopsis of the 



j)rincipal ISIexican genera, by William Edwin Safford 525 



.Vngler fishes: their kinds and ways, by Theodore Gill 565 



The birds of India, by Douglas Dewar 017 



The evolution of the elephant, by Richard S. Lull 041 



Excavations at Boghaz-Keui in the summer of 1907, by Hugo Winckler and (). 



Puchstein 077 



Malaria in Greece, by Ronald Ross 097 



Carl von Liiin('( as a geologist, by A. G. Natiiorst 711 



Life and work of Lord Kelvin, by Silvanus P. Thompson 745 



Tlie Work of ilciiri Px-cquritl, by Andre J5roca 709 



