VI CONTENTS 



Page 



The vacuum — there's something in it, by W. R. Whitney 19; 



The use of radium in medicine, by Antoine B6cl6re 201 



Clear fused quartz made in the electric furnace, by Edward R. Berry___ 21r 



The drifting of the continents, by Pierre Termier 211 



The probable solution of the climatic problem in geology, by William 



Ramsay OS'S 



A modern managerie; more about the National Zoological Park, by N. 



Hollister 040 



Nests and nesting habits of the American eagle, by Francis H. Herrick__ 262 



The breeding places of the eel, by Jobs. Schmidt 27J; 



Cankerworms, by R. E. Snodgrass 317 



A botanical trip to Ecuador, Peru, and Bolivia, by A. S. Hitchcock 335 



Orchid collecting in Central America, by Paul C. Standley 353 



Sketches from the notebook of a naturalist-traveler in Oceania during 



the year 1923, by Casey A. Wood 379 



Historical tradition and oriental research, by James Henry Breasted___ 409 



Shamanism of the natives of Siberia, by I. M. Casanowicz 41o 



Egypt as a field for anthropological research, by Prof. P. E. Newberry__ 435 



North American Indian dwellings, by T. T. Waterman 461 



The nature of language, by R. L. Jones 487 



John Mix Stanley, artist-explorer, by David I. Bushnell 507 



Herluf Winge, by Th. Mortensen 513 



