VI CONTENTS. 



EXECUTIVE COMMITTEE AND BOARD OF REGENTS. 



Page. 



Report of Executive Committee 92 



Proceedings of Board of Regents 96 



GENERAL APPENDIX. 



The gyrostatic compass, by H. Marchand Ill 



Radiotelegraphy, by G. Marconi 117 



Multiplex telephony and telegraphy by means of electric waves guided by 



wires, by George 0. Squier 133 



Recent experiments with invisible light, by R. W. Wood 155 



What electrochemistry is accomplishing, by Joseph W. Richards 167 



Ancient and modern views regarding the chemical elements, by William Ram- 

 say 183 



The fundamental properties of the elements, by Theodore William Richards 199 



The production and identification of artificial precious stones, by Noel Heaton. 217 

 The sterilization of drinking water by ultra-violet radiations, by Jules Cour- 



mont 235 



The legal time in various countries, by M. Philippot 247 



Some recent interesting developments in astronomy, by J. S. Plaskett 255 



The age of the earth, by J. Joly 271 



International air map and aeronautical marks, by Ch. Lallemand 295 



Geologic work of ants in tropical America, by J. C. Branner 303 



On the value of the fossil floras of the arctic regions as evidence of geological 



climates, by A. G. Nathorst 335 



Recent advances in our knowledge of the production of light by living organ- 

 isms, by F. Alex. McDermott 345 



Organic evolution: Darwinian and de Vriesian, by N. C. Macnamara 363 



Magnalia naturae: or the greater problems of biology, by D'Arcy Wentworth 



Thompson 379 



A history of certain great horned owls, by Charles R. Keyes 395 



The passenger pigeon, by Pehr Kalm (1759), and John James Audubon (1831). 407 



Note on the iridescent colors of birds and insects, by A. Mallock 425 



On the positions assumed by birds in flight, by Bentley Beetham 433 



The garden of serpents, Butantan, Brazil, by S. Pozzi 441 



Some useful native plants of New Mexico, by Paul C. Standley 447 



The tree ferns of North America, by William R. Maxon 463 



The value of ancient Mexican manuscripts in the study of the general develop- 

 ment of writing, by Alfred M. Tozzer 493 



The discoverers of the art of iron manufacture, by W. Belck 507 



The Kabyles of north Africa, by A. Lissauer 523 



Chinese architecture and its relation to Chinese culture, by Ernst Boerschmann . 539 



The Lolos of Kientchang, western China, by A. F. Legendre 569 



The physiology of sleep, by R. Legendre 587 



Profitable and fruitless lines of endeavor in public health work, by Edwin O. 



Jordan 603 



Factory sanitation and efficiency, by C.-E. A. Winslow 611 



The physiological influence of ozone, by Leonard Hill and Martin Flack 617 



Traveling at high speeds on the surface of the earth and above it, by H. S. 



Hele-Shaw 629 



Robert Koch, 1843-1910, by C. J. M 651 



Sir Joseph Dalton Hooker, 1817-1911, by Lieut.-Col. D. Prain 659 



