CONTENTS. VI 1 



Nnmlber 95. 



Page 

 Akt, XXXIV.— Mineralogical Notes ; by C. H. Warren _. 337 



XXXV. — Studies of Eocene Mammalia in the Marsh Colh^c- 

 tion, Peabody Museum; by J. L. Wortman. (With 

 Plates XVI and XVII).... ' - 345 



XXXVI. — Triadenum Virginicum (L.) Rafin. A morpho- 

 logical and anatomical study ; by T. Holm. (With 

 figures in the text) _ _ . 369 



XXXVII. — Ephemeral Lakes in Arid Regions; by C. R. 



Keyes 311 



XXXVIII. — Note on the Identity of Palacheite and Botryo- 



gen ; by A. S. Eakle . _ . .' . 3*79 



XXXIX. — Colloidal Gold : Adsorption Phenomena and 



Allotropy ; by J. C. Blake 381 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics — Utilization of Atmospheric Nitrogen for Agricul- 

 tural and Industrial Purposes, Dr. Frank : Use of Calcium Cyanamide for 

 Producing Alkaline Cyanides, G. Erlwein, 388. — Separation of Gaseous 

 Mixtures by Centrifugal Force, Claude and Demoussy : Investigations on 

 Double Salts by Physical Means, H. W. Foote, 389. — Ausgewahlte 

 Methoden der Analytischen Chemie, A. Classen : Physical Chemistry in 

 the Service of the Sciences, J. H. van't Hoff and A. Smith : Penetrative 

 Solar Eadiations, R. Blondlot, 390. — Spectra of the Cathode light in 

 Gaseous Compounds of Nitrogen and Carbon, H. Deslandres : Dark 

 Cathode Space, G. C. Schmidt : Observations of Slow Cathode Radiations 

 with the help of Phosphorescence, P. Lenard, 391. — Discharge of Elec- 

 tricity from Hot Platinum, H. A. Wilson : Penetrating Radiation from 

 the Earth's Surface, H. L. Cook : Mathematical Papers of the late George 

 Green, S92. — Electric and Magnetic Circuits, E. H. Crapper, 393. 



Geology and Mineralogy — United States Geological Survey, 394. — Geological 

 Survey of Canada, 395. — -Elements of Geology, J. LeConte : Chemical 

 Analyses of Igneous Rocks ; Published from 1884-1900, with a Critical 

 Discussion of the Character and Use of Analyses, H. S. Washington, 396. 

 — Californite (Vesuvianite), G. F. Kunz, 397. — Native Bismuth and Bis- 

 mite from Pala, California, G. F. Kunz, 398. — Production of Precious 

 Stones in 1902, G. F. Kunz, 399. 



Miscellaneous Scientific Intelligence — Report of the U. S. National Museum 

 under the direction of the Smithsonian Institution for the year ending- 

 June 30, 1901, 399. — Fauna and Geography of the Maldive and Laccadive 

 Archipelagoes, J. S. Gardiner : Catalogue of the Collection of Birds' 

 Eggs in the British Museum (Natural History), E. W. Gates and S. G. 

 Reid : Hand-list of the Genera and Species of Birds, R. B. Sharpe : 

 Cold Spring Monographs, Nos. I and II, 400. 



