Vlll CONTENTS. 



Number 204. 



Page 

 Art. XLTII. — Buried Wall at Cuzco and its Relation to the 

 Question of a pre-Inca Race (Yale Peruvian Expedition, 

 1911); by I. Bowman '. - 497 



XLIV. — Kragerite, a Rutile-bearing Rock from Krageroe, 



Norway ; by T. L. Watson _ 509 



XLV. — Thermodynamics of the Earth's Nonadiabatic 



Atmosphere ; by F. H. Bigelow. '.-.. 515 



XL VI. — Note on Atmospheric Radiation ; by F. W. Vert 533 



XLVIL— Hydrolysis of Alkyl Metallic Sulphates ; by G. A. 



LlNHART -- - 539 



XL VIII. — Early Man in America ; by A. Hrdlicka 543 



XLIX. — Constitution of Some Salic Silicates ; by H. S. 



Washington 555 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics — Preparation of Perchloric Acid, H. H. Willaed ; 

 Centenary Celebration of the First Commercial Gas Company : The 

 Analyst's Laboratory Companion, A. E. Johnson, 572. — A College Text- 

 Book on Quantitative Analysis, H. E. Moody : Per-acids and their Salts, 

 T. S. Price : Lehrbuch der Chemischen Technologie und Metallurgie, 

 B. Neumann, 573.— Raumliche Intensitatsverteilung der X-Strahlen, die 

 von einer Platinantikathode ansgehen, W. Friedrich, 574. — Experimen- 

 telle Bestimmung des Verhaltnisses der spezifischen Warmen c p /c v bei 

 Kalium imd Natriumdampfen nnd daraus sich ergebende Sehlussfolge- 

 rungen, M. Eobitzch, 575. — Untersuchungen liber magnetische Zerlegung 

 feiner Spektrallinien im Vakuumlichtbogen, Ch. Wali-Mohammad : 

 Absorption Spectrum of Tellurium Vapor and the Effect of High Tem- 

 perature upon it, E. J. Evans, 576. 



Geology — New York Potsdam-Hoyt Fauna and Group Terms for the Lower 

 and Upper Cambrian Series of Formations, C. D. Walcott, 578. — Volcanic 

 vortex rings and the direct conversion of lava into ash, F. A. Perret, 579. 



Miscellaneous Scientific Intelligence — National Academy of Sciences, 579. 



Obituary— J. W. Mallet, 579. 



Index to Volume XXXIV, 580. 



