CONTENTS. 



Number 99. 



Page 



Art. XIII. — Geology of the North End of the Taconic 



Range; by T. N. Dale. (With Plate XI) __ 185 



XIV. — Notes on some California Minerals ; by W. T. 



Schaller ._ 191 



XV. — Crystallographical and Chemical Notes on Lawsonite ; 



by W. T. Schaller and W. F. Hillebrand ,_ 195 



XVI. — Determination of Nitrites in Absence of Air ; by I. 



K. Phelps. - 198 



XVII. — Use of Ferrous Sulphate in the Estimation of Chlor- 

 ates and Bromates ; by I. K. Phelps 201 



XVIII. — Studies of Eocene Mammalia in the Marsh Collec- 

 tion, Peabody Museum ; by J. L. Wortman 203 



XIX. — Notes on a New Meteorite from Hendersonville, 

 N. C, and on additional pieces of the Smithville, Tenn., 

 Fall; by L. C. Glenn _ 215 



XX. — Periodic Migrations between the Asiatic and the 



American Coasts of the Pacific Ocean ; by J. P. Smith 21V 



XXI. — Triticites, a New Genus of Carboniferous Foramin- 



ifers; by G. H. Girty 234 



XXII.— Prismatic Crystals of Hematite ; by G. W. McKee 241 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics — Attempt at a Chemical Conception of the Universal 

 Ether, D. J. Mendeleeff : Gold Fluoride, V. Lenher, 243. —Separation 

 of Radium from Barium, Marckwald : Dissociation of the Alkaline Car- 

 bonates, P. Lebeau : Combination of Saccharose with Certain Metallic 

 Salts, D. Gauthier, 244. — Density of Chlorine, Moissan and Jassoneix : 

 Doppler Effect in Electrical Sparks, A. Hagenbach : Effect of Tempera- 

 ture on Ionization by Eontgen Rays, E. K. McClung, 245. — Arc in 

 Metallic Vapors in an Exhausted Space, E. Weintraub : Electricity and 

 Magnetism ; Elementary Text-Book Theoretical and Practical, E. T. 

 Glazebrook, 246. — Mechanics, Molecular Physics and Heat, E. A. Milli- 

 kan : Treatise on Thermodynamics, M. Planck, 247. 



Geology — Coral Eeefs' of the Maldives, A. Agassiz : Note on the Classifica- 

 tion of the Carboniferous formation of Kansas, H. S. Williams, 248. — 

 Einfuhrung in die Palaontologie, G. Steinmann : Structure of the Pied- 

 mont Plateau as shown in Maryland, E. B. Mathews : Western Australia 

 Geological Survey, 249. — Evolution of Earth Structure, T. M. Eeade, 250. 



Miscellaneous Scientific Intelligence — Smithsonian Institution, Eeport for 

 1903, 251. — Smithsonian Miscellaneous Collections, Quarterly Issue: 

 Weather Bureau, U. S. Department of Agriculture : Scientia, 252. 



Obituary— Dr. Charles Emerson Beecher : Professor Karl Alfred von 



ZlTTEL. 



