C ONTKNTS. 



Page 



Art. XXXIII. — The Several Forms of Calcium Carbonate ; 

 by J. Joh^sto^, H. E. Merwin, and E. D. William- 

 son 473 



XXXIV. — Fundamental Distinctions Special to the Process 

 of Transrnissioii of Terrestrial Radiation by the Atmos- 

 phere, and the Value which is Obtained for the Coefficient 

 of Transmission when these are Considered ; by F. W. 

 Very 513 



XXXV. — A New Longirostral Mastodon from Nebraska, 



Tetrabelodon osborni, sp. nov. ; by E. H. Barbour 522 



XXXVI. — Two Caudal Vertebras of a Sauropodous Dinosaur 



Exhibiting a Pathological Lesion; by R. L. Hoodie. . 530 



XXXVII.— The Growth of Crystals Under External Pressure; 



by S. Taber.. „_'. 532 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics — Stannous and Lead Double Halogen Salts, E. Rim- 

 bach and K. Fleck, 556. — Production of Liquid Hydrocarbons from 

 Naphthaline. F. Fischer : Application of Paper Pulp as a Filter in 

 Quantitative Analysis. S. L. Jodidi and E. H. Kellogg : Gases of the 

 Atmosphere, Sir W. Ramsay, 557. — Metallurgists and Chemists' Hand- 

 book, D. M. Liddell : Ampere Molecular Currents, A. Einstein and W. 

 J. de Haas 558. — Refraction of X-Rays, C. G. Barkla, 560. — Long- 

 Range Alpha-Particles from Thorium, Sir E. Rutherford : The Science 

 of Musical Sounds, D. C. Miller, 561. — Theory of Errors and Least 

 Squares, L. D. Weld, 562. 



Geology and Mineralogy — Strophomenidae of the Kristiania region, 0. 

 Holtedahl. 562. — A revision of Cheirurinse with notes on their Evolu- 

 tion, D. C. Barton, 563. — Age of the Killarney Granite, W. H. Collins : 

 Morphology and Anthropology, a Handbook for Students, W. L. H. 

 Duckworth : Geology and Geography of the Galena and Elizabeth Quad- 

 rangles, 111., etc., A. C. Trowbridge, etc. : Union of South Africa, Geo- 

 logical Survey, H. Kynaston, 564. —New Zealand Geological Survey, 

 Bulletin No. 17, 565. — Geological Survey of Western Australia, A. Gibb 

 Maitland : New Mineral Names, W. E. Ford, 566. 



Index, 571. 



313 



