CON T E N TS. 



Page 



Am. I. — Storm King Crossing of the Hudson River, by the 

 New Catskill Aqueduct, of New York City; by J. F. 



K K M P 1 



II. — Lake Parinacochas and the Composition of its Water ; 



by G. S. .Iamieson and II. Bingham 12 



III.—! Shell Heaps of Maine ; by F. 15. Loomis and D. B. 



Young 17 



IV. — Mixtures of Amorphous Sulphur and Selenium as 

 Immersion Media for the Determination of High Refrac- 

 tive Indices with the Microscope ; by II. E. Merwin 

 and E. S. Larsen ' 42 



V. — Asymmetry in the Distribution of Secondary Cathode 

 Rays produced by X-rays ; and its Dependence on the 

 Penetrating Power of the Exciting Rays ; by C. D. 



COOKSEY 48 



VI. — Derivation of the Fundamental Relations of Electro- 

 dynamics from those of Electrostatics; by L. Page 57 



VII. — Hydrolysis of Esters of Substituted Aliphatic Acids ; 



by W. A. Djrushel 69 



VIII. — Some Suggested New Physiographic Terms ; by DeL. 



D. Cairnes .. . 75 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics — Higher Layers of the Atmosphere, A. -Wegener, 

 88. — Allen's Commercial Organic Analysis, 90. — Methods for Sugar Analy- 

 sis, A. Given : Laboratory Exercises in Physical Chemistry, J. N. PkiNg : 

 Entdeckung des Radiums. Mine. Curie : tlber neuere thermodynamische 

 Theorien (Nernstsehes Warmetheorein undQuantenhypothese, M. Planck : 

 Studies in Terrestrial Magnetism, C. Chree, 91. — Physical Study of the 

 Firefly, W. W. Coblentz : Elements of Hydrostatics, G. W. Parker, 92. 



Geology and Natural History — Effect of Topography and Isostatic Compen- 

 sation upon the Intensity of Gravity, J. T. Hayford, 92. — Geological Sur- 

 vey Branch New Zealand Department of Mines, 93. — Physical Geography 

 for South African Schools, A. L. DuToit : Notes on fossils from limestone 

 of Steeprock Lake, Ontario, C. D. Walcott : Report on some recent collec- 

 tions of fossil Coleoptera from the Miocene shales of Florissant : Glacial 

 Man in England, 94. — Geological and Natural History Survey of Connecti- 

 cut : Report on the Progress and Condition of the Illinois State Museum 

 of Natural History 1909-1910: Mineralien-Sammlungen ; ein Hand- und 

 Hilfsbuch fur Anlage und Instandhaltung mineralogischer Sammlungen : 

 Der Diamant, 95. — The British Tunicata : Ceylon Marine Biological 

 Reports, 96. 



Miscellaneous Scientific Intelligence — Carnegie Foundation for the Advance- 

 ment of Learning : Proposed Expedition to Crocker Land, 97. — Expedi- 

 tion Antarctic Francaise (1903-1905) : Publications of the Smithsonian 

 Institution, 98. — British Museum Catalogues ; Publications of the Alle- 

 gheny Observatory of the University of Pittsburgh : Bref och Skrifvelsen 

 af och till C. v. Linne, 99. — Essais de Synthese Scientifique : Rationalist 

 English Educators, G. E. Hodgson : Zeitsehrif t f iir Gahrungsphysiologie; 

 allgemeine, landwirtschaftliche, und technische Mykologie : Meteorology, 

 A Text-book on the Weather, its Changes, and Weather Forecasting : 

 Chemical Research in its Bearings on National Welfare, 100. 



