CONTENTS. 



Page I 



Art. XVIII. — Determinate Orbital Stability: its Mechanism ! 

 and some of its Functions in Celestial Mechanics; by F. 



B. Taylor 295 ! 



Art. XTX. — Paleobotany and the Earth's Early History; j 



by A. P. Coleman 315 ' 



Art. XX. — Evolution of Geologic Climates ; by C. Schuchert 320 j 



Art. XXI. — The American Bothriodonts; by E. L. Troxell 325 ! 



Art. XXII. — Pah^olagus, an Extinct Hare; by E. L. j 



Troxelt ^ 340 



Art. XXIII. — White Mountain Physiography; by A. C. I 



Lane 349 



Art. XXIV. — An Alkali Gneiss from the Pre-Cambrian of 



New Jersey ; by N. E. A. Hinds 355 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics — The Double Decomposition of Salts in Connection with 

 the Phase Rule, E. Rengade, 364.— A Comparison of the Atomic Weights 

 of Terrestrial and Meteoric Nickel, G. P. Baxter and L. W, Parsons : 

 General and Industrial Organic Chemistry (F, Molinari). T. H. Pope, 

 365 — A Treatise on Chemistry, Roscoe and Schorlemmer : Musical Sands, 

 C. Carus-Wilson, 366.— The Electric Furnace, H. Moissan : Lessons in 

 Heat, W. S. Franklin and B. McNutt, 367. — Matter and Motion, J. C. 

 Maxwell : Mechanical Sciences Tripos : A Text Book of Physics, W. 

 Watson, 368. 



Geology — Crinoidea Flexibilia, F. Springer, 369. — Dnnkard Series of Ohio, 

 Stadffer and Schroyer, 371. — The Stratigraphy and Paleontology of 

 Toronto and Vicinity, Part I, The Pelecypoda, B. H. Stewart : Notes on 

 the Geology and Oil Possibilities of the northern Diablo Plateau in Texas, 

 J. W. Beejl»e : The Weno and Pawpaw Formations of the Texas Comanch- 

 ean, W. S Adkins, and On a new Ammonite Fauna of the Lower Turon- 

 ian of Mexico, E. Bose : Fossil Corals from Central America, Cuba, and 

 Porto Rico, with an account of the American Tertiary, Pleistocene, and 

 Recent Coral Reefs, T. W. Vaughan, 373. — Studies in Minor Folds, C. 

 E, Decker: Lithologic Subsurface Correlation in the ''Bend Series" of 

 North-Central Texas, M. I. Goldman : The Hadrosaur Edmontosaurus 

 from the Upper Cretaceous of Alberta, L. M. Lambe, 374. — The Nom'en- 

 clature of Petrology, A. Holmes, 375. 



Miscellaneous Scientific Intelligence — Carnegie Institution of Washington, R. 

 S. "Woodward. 375. — Collected Fruits of Occult Teaching, A. P. Sinnett : 

 Spiritualism — Its Present Day Meaning, a Symposium, H. Carter, 376.— 

 Types of Mental Deficiency, M. W. Barr and E. F. Maloney : Practical 

 Bank Operation, L. H. Langston, 378. — First Pan Pacific Scientific Con- 

 ference, Honolulu, Hawaii, Aug. 20, 1920, Part I, Organization, Proceed- 

 ings, Resolutions, 379. — The Origin of Man and of his Superstitions, C. 

 Read, 380. 



Obituari/S. W. Burnham : C. H. Fernald : I. A. Field : F. J. V. Skiff : 

 A. G. Nathorst: T. Miyake : J. C. Cain : C. Toldt, 380. 



