vi 
CONTENTS 
' PAGB 
The Thomson Effect and Thermai, Conduction in Metals 
By Edwin H. Hall 613 
The Intensities of X-Rays of the L-Series, III. Critical Potentials of 
THE Platinum and Tungsten Lines By Frank C. Hoyt 639 
Some New Methods in Interior Ballistics By Arthur Gordon Webster 648 
Luminescence at High Temperatures By E. L. Nichols and D. T. Wilbur 693 
Experiments with the Tube Resistance Furnace on the Effect of Potential 
Difference By Arthur S. King 701 
CHEMISTRY 
The Chemical Isolation of Vitamines By C. N. Myers and C. Voegtlin 3 
The Nature and Function of the Antineuritic Vit amine . By R. Adams Butcher 10 
The Ionization and Activity of Largely Ionized Substances 
By A. A. Noyes and D. A. Maclnnes 18 
The Protein Requirement of Maintenance in Man By H. C. Sherman 38 
An Apparent High Pressure Due to Adsorption, and Heat of Adsorption, 
AND THE Density of Gas-Mask Charcoals 
By William D. Harkins and D. T. Ewing 49 
The Influence of Ions on the Osmotic Pressure of Solutions 
By Jacques Loeb 211 
The Relation Between the Iso-Electric Point of a Globulin and Its Solu- 
bility AND Acid-Combining Capacity in Salt Solution. . .By E. J. Cohn 256 
Alkyl Amides of Isothiocyanacetic Acid 
By Treat B. Johnson, Arthur J. Hill and E. B. Kelsey 290 
Anomalous Osmose By F. E. Bartell 306 
Analytical Note on Certain Rhythmic Relations in Organic Systems 
By Alfred J. Lotka 410 
The Ionization of Strong Electrolytes By William D. Harkins 601 
Hydrogen Ion Concentration of the Contents of the Small Intestine 
By J. F. McClendon 690 
GEOLOGY AND PALEONTOLOGY 
Reconstruction of the Skeleton of the Sauropod Dinosaur Camarasaurus 
Cope (Morosaurus Marsh) By H. F. Osborn and C. C. Mock 15 
Restoration of Camarasaurus and life Model By W. K. Gregory 16 
Plato's Atlantis in Palaeogeography By W. D. Matthew 17 
Differentiation by Deformation By N. L. Bowen 159 
A General Sinking of Sea-LEvEL in Recent Time By Reginald A. Daly 246 
Fossil Plants from the Late Cretaceous of Tennessee 
By Edward W. Berry 333 
On Chondrules and Chondritic Structure in Meteorites 
By George P. MerrilfMd 
The KilauEa Volcano Observatory By a Committee of the Academy 706 
BOTANY 
The Formation of the Cell Plate in the Cambium of the Higher Plants .... 
By Irving W. Bailey 197 
THE Influence of Cold in Stimulating the Growth of Plants 
By Frederick V. Coville 434 
The Genus Botrychium and Its Relationships By D. H. Campbell 502 
ZOOLOGY 
The Transplanting of Sea Anemones by Hermit Crabs By R. P. Cowles 40 
