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ART. VII.-The Cretaceous Armored Dinosaur, Nodosaurus

textilis Marsh; by R. S. LULL (With Plates I to IV).. 97

ART. VIII.—Outline of the Application of the Theory of Space

Groups to the Study of the Structure of Crystals; by R.

ART. IX.-Crystal Structure of Magnesium Oxide; by R. W.

ART. X.-Mississippian Formations of the Horton-Windsor

District, Nova Scotia; by W. A. BELL...

ART. XI.-Relations of Subjacent Igneous Invasion to Re-

gional Metamorphism (continued); by J. BARRELL..... 174

ART. XII.-Permian of Coahuila, Northern Mexico; by E.

ART. XIII.-Occurrence of Structures like Walcott's Algon-

kian Algæ in the Permian of England; by O. HOLTEDAHL 195

SCIENTIFIC INTELLIGENCE.

Chemistry and Physics - Perchloric Acid as a Dehydrating Agent in the Deter-

mination of Silica, H. H. WILLARD and W. E. COKE: Chemistry and

Crystallography of Some Fluorides of Cobalt, Nickel, Manganese and

Copper, F. H. EDMISTER and H. C. COOPER, 207.-Notes on Chemical Re-

search, W. P. DREAPER: Elementary Chemistry for Coal-mining Students;

L. T. O'SHEA, 208.-Creative Chemistry, E. E. SLOSSON: Où en est La

Météorologie, A. BERGET, 209. - Etude sur Le Système Solaire, P. REYNAUD,

210.—The National Physical Laboratory, Report for the Year 1919, 211.

Geology and Mineralogy-Geology of Anglesey, E GREENLY, 212.--Abriss der

Allgemeinen und Stratigraphischen Geologie, E. KAYSER: Geology and

Mineral Resources of Bexar Co., Texas, E. H. SELLARDS: Geology of Tarrant

County, W. M. WINTON and W. S. ADKINS: Mineralogy, an Introduction

to the Study of Minerals and Crystals, E. H. KRAUS and W. F. HUNT,

213.-Ore Deposits of Utah, B. S. BUTLER, 214.

Obituary-H. A. BUMSTEAD: W. DEW. ABNEY: P. S. UMFREVILLE: W. A.

HOWARD Y. DELAGE, 214.

ART. XIV.-John Day Promery cocheri, with Descriptions

of Five New Species and One New Subgenus; by M. R.

ART. XV.-Episodes in Rocky Mountain Orogený; by C. L.

ART. XVI.-Relations of Subjacent Igneous Invasion to Re-

gional Metamorphism (concluded); by J. BARRELL..... 255

ART. XVII. The Post-Glacial Terraces of Anticosti Island;

by W. H. TWENHOFEL and W. H. CONINE..

SCIENTIFIC INTELLIGENCE.

Chemistry and Physics-Devitrification of Glass, A. F. O. GERMANN: A Substi-

tute for Thoulet's Solution, A. THIEL and L. STOLL: Priestley in America,

1794-1804, E. F. SMITH, 279.-Introduction to General Chemistry (H.

Copaux), H. LEFFMANN: A Text-Book of Organic Chemistry, E. DEB.

BARNETT: Comparison between wave lengths of solar and of terrestrial

origin, A. PEROT, 280.-The Imaginary in Geometry, J. L. S. HATTON :

The Principles of the Phase Theory, D. A CLIBBENS: Lessons in Mechanics,

W. S. FRANKLIN and B. MACNUTT, 281. - Lessons in Electricity and Mag-

netism, W. S. FRANKLIN and B. MACNUTT, 282. Die Stellung der Relativ-

itätstheorie in der geistigen Entwicklung der Menschheit, J. Petzoldt,

Geology-The Earth's Axes and Triangulation, J. DE G. HUNTER, 283.-Inves-

tigations of Isostasy in Himalayan and Neighbouring Regions, S. G. BUR-

RARD, 285.-Connecticut Geological and Natural History Survey, F. WARD,

etc., 286.-The Erosional History of the Driftless Area, A. C. TROWBRIDGE:

Geological Survey of Western Australia, A. G. MAITLAND, 287.-Tenth

Annual Report of the Director of the Bureau of Mines, for the fiscal year

ending June 30, 1920, F. G. COTTRELL, 288.

Miscellaneous Scientific Intelligence-The System of Animate Nature, J. A.

THOMSON, 288.-Mechanismus und Physiologie der Geschlechtbestim-

mung, R. GOLDSCHMIDT, 289.-Biology, General and Medical, J. MCFAR-

LAND: An Introduction to the Study of Cytology, L. DONCASTER, 290.-

A Laboratory Manual of Invertebrate Zoology, G. A. DREW: Considéra-

tions sur l'Être Vivant, C. JANET: Collection les Maitres de la Pensée

Scientifique Practical Bacteriology, Blood Work and Animal Parasitol-

ogy, E. R. STITT, 291.-Memoirs of the Bernice Pauahi Bishop Museum of

Polynesian Ethnology and Natural History, A. FORNANDER: New Geo-

graphy, Book I, A. E. FRYE: Memoirs of the Queensland Museum, H. A.

LONGMAN Transactions and Proceedings of the New Zealand Institute,

Wellington, N. Z. The National Academy of Sciences, 292.-Observatory

Publications: A Laboratory Manual of Anthropometry, H. H. WILDER, 293.

Obituary-W. T. SEDGWICK: L. FLETCHER: L. W. RIDDLE: A. MUIRHEAD:

F. HOUSSAY, 294.

ART. XVIII.-Determinate Orbital Stability: its Mechanism

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

ART. XIX.-Paleobotany and the Earth's Early History;

by A. P. COLEMAN..

ART. XX.-Evolution of Geologic Climates; by C. SCHUCHERT 320

ART. XXI.-The American Bothriodonts; by E. L. TROXELL 325

ART. XXII.-Palæolagus, an Extinct Hare; by E. L.

ART. XXIII. White Mountain Physiography; by A. C.

ART. XXIV.-An Alkali Gneiss from the Pre-Cambrian of

New Jersey; by N. E. A. HINDS..

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.

Geology-Crinoidea Flexibilia, F. SPRINGER, 369.-Dunkard Series of Ohio,

STAUFFER 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. BEELE: 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. BÖSE: Fossil Corals from Central America, Cuba, and

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

Recent Coral Reefs, T. W. VAUGHAN, 372.-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 Nomen-

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.

Obituary-S. W. BURNHAM: C. H. FERNALD: I. A. FIELD: F. J. V. SKIFF:

A. G. NATHORST: T. MIYAKE: J. C. CAIN C. TOLDT, 380.

ART. XXVI.—New Camels in the Marsh Collection; by R.

ART. XXV.-Post-Glacial Warping of Newfoundland and

Nova Scotia; by R. A. DALY

ART. XXVII.—Leptauchenia Leidy and Cyclopidius (Pithe-

cistes) Cope, etc.; by M. R. THORPE.

ART. XXVIII.—A Potamogeton from the Upper Cretaceous;

by E. W. BERRY....

ART. XXIX.-Additional Notes on the Crystallography and

Composition of Boulangerite; by E. V. SHANNON...... 423

ART. XXX.-The Oriskany Sandstone Faunule at Oriskany

Falls, New York; by H. N. EATON.

ART. XXXI.-Two Petrified Palms from Interior North

America; by N. E. STEVENS

ART. XXXII.-The Isomorphic Relations of the Sulphosalts

of Lead, Silver and Copper; by W. F. FOSHAG.

ART. XXXIII.-The Occurrence of Calcareous Sandstone

in the Recent Delta of Fraser River, British Colombia,

Canada, by W. A. JOHNSTON

ART. XXXIV.-The Age of the Recent Delta of Fraser

River, British Columbia, Canada; by W. A. JOHNSTON 450

SCIENTIFIC INTELLIGENCE.

Chemistry and Physics-Separation of Gallium from Indium and Zine by Frac-

tional Crystallization of the Cæsium-Gallium Alum, P. E. BROWNING and

E. PORTER, 453.-Text-Book of Practical Chemistry, G. F. HoOD and J. A.

CARPENTER: Dictionary of Chemical Solubilities, Inorganic, A. M. COMEY

and D. A. HAHN, 454.-Inorganic Chemistry for Schools and Colleges, J.

L. HOWE: Luminous phenomena in the Lilienfeld tube, J. E. LILIENFELD

and F. ROTHER, 455.-Observations on Soaring Flight, E. H. HANKIN,

456.-Elementary Calculus, W. F. OSGOOD: Space, Time and Gravitation,

A. S. EDDINGTON, 457.- Principle of Relativity, H. W. CArr, 458.

Geology-Zur Älteren Geschichte des Diskontinuitätsproblems in der Biogeo-

graphie, N. v. HOFSTEN: Recent Molluscs of Gulf of Mexico, etc., C. J.

MAURY, 459.-Brachiopoda Triadica, C. DIENER: Cephalopoda Dibranch-

iata, E. v. BÜLOW-TRUMMER: Coal in Great Britain, W. GIBSON: Mono-

graph of the British Ordovician and Silurian Bellerophontacea, F. R. C.

REED, 460.-West Virginia Geological Survey, I. C. WHITE, 461.

Zoology and Botany-Sanitary Entomology, W. D. PIERCE, 461.-Embryology of

Chick: B. M. PATTEN: University of Iowa Studies in Natural History, C. C.

NUTTING: Origin and Development of Nervous System, C. M. CHILD, 462.-

The Cactaceæ, N. L. BRITTON and J. N. ROSE: Phytoplankton of the inland

lakes of Wisconsin, G. M. SMITH, 463.-Introduction to Bacterial Diseases

in Plants, E. F. SMITH: Text book of Pastoral and Agricultural Botany,

J. W. HARSHBERGER, 464. - Heredity and Evolution in Plants, C. S.

GAGER: Diseases of Economic Plants, F. L. STEVENS: Nature-Study of

Plants, T. A. DYMES: Chemistry of Plant Life, R. W. THATCHER, 465.

Miscellaneous Scientific Intelligence-Annual Report Carnegie Foundation,

H. S. PRITCHETT and R. A. FRANKS: National Academy of Sciences,

466.-Science News Bulletin: French-English Medical Dictionary: Labora-

tory Manual for Detection of Poisons and Powerful Drugs, 467.-Intro-

duction to Chemical Pharmacology: New York State Income Tax

Procedure, 1921, 468.

HENRY ANDREWS BUMSTEAD (with Frontispiece)

ART. XXXV.-Two New Fossil Carnivora; by M. R.

ART. XXXVI.—A New Harmonic Analyzer; by W. MASON 484

ART. XXXVII.-Orientite, a new hydrous Silicate of Manga-

nese and Calcium from Cuba; by D. F. HEWETT and

ART. XXXVIII.-Post-glacial Faulting in the French River

District of Ontario; by W. H. HOBBS...

ART. XXXIX. —A Note on the Cernaysian Mammal Fauna ;

by W. D. MATTHEW

SCIENTIFIC INTELLIGENCE.

Geology and Mineralogy--The Appendages, Anatomy, and Relationships of

Trilobites, P. E. RAYMOND, 512.-The Geology of Hardin County, and the

Adjoining Part of Pope County, S. WELLER, etc., 513.-Devonian Floras,

a study of the Origin of Cormophyta, E. A. N. ARBOR, 514.- Le Platine

et les Gîtes platinifères de l'Oural et du Monde, L. DUPARC and M.-N.

TIKONOWITCH: Elemente der physikalischen und chemischen Krystallo-

graphie, P. GROTH: Crystallography, J. B. JORDAN, 515.-New Mineral

Names, W. E. FORD, 516.

Miscellaneous Scientific Intelligence-National Academy of Sciences: The Princi-

ples of Immunology, H. T. KARSNER and E. E. ECKER, 518.-Microbiology,

C. E. MARSHALL: Bibliotheca Zoologica II, O. TASCHENBERG, 519.-Flora

of Glacier National Park, Montana, P. C. STANDLEY: The Topographical

Survey of the United States: Report of the Librarian of Congress, H.

PUTNAM, for the year ending June 30, 1920: The Maine Naturalist, 520.

Obituary-G. F. WRIGHT, 520.

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