XX Name Index 
Nature, 
August 11, 1923 

Pastureau and H. Bernard, Tetramethylglycerol, 795 
Patrick (C. V.) and W. W. Smith, The Case against Spirit 
Photographs, 139 
Pauli (Prof. W.), translated by P. C. L. Thorne, Colloid 
Chemistry of the Proteins. Part I., 733 
Payson (E. B.), A Taxonomic Study in the Cruciferae, 683 
Peacock (Prof. D. H.), German Book Prices, 362 
Peake (A. H.), re-appointed demonstrator of mechanism 
in Cambridge University, 864 
Peake (H.), The Bronze Age and the Celtic World, 454 
Pear (Prof. T. H.), A New Type of Number Form, 654 ; 
Remembering and Forgetting, 316 
Pearcey (F. G.), Representation of a Living Coral Reef, 301 
Pearl (Prof. R.), Alcohol and the Duration of Life, 513 ; 
and Bacon, The Relative Size of Heart, Liver, Spleen, 
and Kidneys and Tuberculosis, 513; and Burger, 
The Vital Index of Population, 513; and Parker, 
The Density of Population and Drosophila, 513; 
The Duration of Life in Drosophila, 513; Effects of 
the Contiguity of Organisms, 302 
Pearson (Col. G. F.), [death], 678 ; [obituary article], 748 
Pearson (Prof. K.), Biology of Man, 809 
Pearson (W.), [death], 437 
Pécheux (H.), The Magnetism of Nickel, 691; The Magnetism 
of Steels, 795 
Peczalski (T.), The Relation between Young’s Modulus 
and the Ratio of Density to Atomic Mass, 383 
Peddie (Prof. W.), Colour Vision: a Discussion of the 
Leading Phenomena and their Physical Laws, 799 ; 
Definitions and Laws of Motion in the “ Principia,” 
395; The Mechanism behind Relativity, 795 
Peel (T.), re-appointed demonstrator of applied mechanics 
in Cambridge University, 864 
Peet (Prof. T. E.), The History of King Tutankhamen, 234 
Pélabon (H.), The Thermoelectric Power of Alloys, 762 
Pélissier (M.), The Formation of a new Volcanic Island 
south of Poulo-Cécir de Mer, 831 
Penfold (A. R.) and F. R. Morrison, The Essential Oil 
of Eriostemon Crowet (Crowea saligna), 311; and 
R. Grant, The Economical Utilisation of the Residues 
from the Steam Rectification of the Essential Oil 
of Eucalyptus cneorifolia, etc., 311 
Pérard (A.), Study of some Mercury and Krypton Radia- 
tions with the View of their Applications in Metrology, 
655; Study of some Neon Radiations with the View 
of their Applications to Metrology, 310 
Percival (Prof. J.), Chromosome Numbers in Aegilops, 810 
Peres (Dr. M. A.), The Réle of Astronomy in the Develop- 
ment of Science, 162 
Perkin (Prof. W. H.) and Prof. F. S. Kipping, Organic 
Chemistry. New edition. Part I., 142 
Perman (E. P.) and H. L. Saunders, The Vapour Pressures 
of Concentrated Cane-sugar Solutions, 761 
Perrakis (N.), The Cryoscopic Study of Binary Organic 
Mixtures, 691 
Perry (F. W.), The Perry Auto-Time Morse System : 
an Aid to the Rapid Acquirement of Speed in the 
Transmission and Reception of the Morse Code, 628 
Perry (W. J.), appointed University reader in cultural 
anthropology in London University, 449; Distribu- 
tion of Megalithic Monuments in England and Wales, 
442; The Neurological Basis of Human Behaviour 
in Society, 654 
Perrycoste (F. H.), Factors of Odorous Strength, 359 
Petavel (Capt. J. W.), The New Social Question, 688 
Peters (Dr. R. A.), elected to the Whiteley professorship 
of Biochemistry in Oxford University, 204 
Petersen (Dr. C. G. J.), Impoverishment of a Plaice 
Fishing Ground, 414 
Petrie (T.), Modern Practice in Heat Engines, 596 
Petrie (Prof. W. M. Flinders), An Old-World Cubit in 
America, 647; Egyptian Water-Clocks, 569; The 
Wegener Hypothesis and the Great Pyramid, 429 
» Petronievics (Dr.), The Finitistic Theory of Space, 161 
Pettersson (Prof. O.), celebration of the seventy-fifth 
anniversary of the birthday of, 337 
Petty (Sir William), The Tercentenary of, 676 
Pfeiffer (N. E.), The Isoetacee, 443 
Pfeiffer (Prof.), appointed director of the Josefine und 
Eduard von Portheim-Stiftung fiir Wissenschaft und 
Kunst, 34 
Pfister (Dr. O.), translated by Barbara Low and Dr. 
M. A. Mugge, Expressionism in Art: its Psychological 
and Biological Basis, 736 
Phillips (F. C.), awarded the Wiltshire prize in Cambridge 
University, 900 
Phillips (S. B.), Determination of the Purity of Vanillin, 
19 
icine (M.), Methods of Analysis of Cocoa Butter and 
its Mixtures with Vegetable Fats, 727 ; 
Pick (W. H.), A Short Course in Elementary Meteorology, 
10 
Picon AL), The Action of Sodammonium on Aniline and 
its Homologues, 35 
Pictet (Prof. A.), elected an honorary fellow of the Chemical 
Society, 439 
Piettre (M.), The Estimation of Humic and Fatty Materials 
in the Soil by Means of Pyridine, 763 “a 
Piketty (P.), Cold Hardening by Drawing, 275 
Pile (S.) and R. Johnston, Tested Methods of Metallurgical 
Analysis (Non-Ferrous), 356 
Pilley (J. G.), Separation of Isotopic Ions, 848 
Pilsbry (Dr. H. A.) and J. H. Ferris, Land Mollusca of 
+ the South-western United States, 786 
Pistolesi (Dr. E.), The Differential Equations of Motion 
of a Fluid in a Field of Velocity produced by a Screw 
Propeller, 887 
Pite (Prof. B.), Definition of an Artist, 439 
Pitt (Frances), Woodland Creatures: being some Wild 
Life Studies, 112 
Pitt (St. George Lane Fox), Science and Economics, 670 
Planiol (A.), The Influence of Velocity and of Temperature 
on the Friction Losses in Explosion Motors, 655 
Plaskett (Dr. H. H.), Spectra of three O-type Stars, 580 
Platt (Dr. C.), The Psychology of Thought and Feeling : 
A Conservative Interpretation of Results in Modern 
Psychology, 12 
Plummer (W. E.), Report of the Liverpool Observatory, 
Bidston, 412 
Pocock (R. I.), impending retirement from the super- 
intendency of the Zoological Gardens, 126 
Poivilliers (G.), A New Process for Making Stereoscopic 
Maps, 511 
Pole-Evans (Dr. M.), Rusts in South Africa, 373 
Policard (A.), The Histochemical Detection of Total Iron 
in Tissues by the Method of Incineration, 692; The 
Mineralisation of Histological Sections by Calcination, 
655 
Polimanti (Dr. O.), appointed director of a Biological 
Laboratory at Lake Trasimeno, 372 
Ponder (E.), The Inhibitory Effect of Blood Serum on 
Hemolysis, 450 
Pontier (G.), The Presence of Elephas planifrons in the 
Red Crag (English Upper Pliocene), 275 
Poole (E. G. C.), Edwards’s A Treatise on the Integral 
Calculus. Vol. 2, 391 
Poole (Prof. G.), appointed professor of mining at Arm- 
strong College, 484 
Poole (Dr. H. H.), Speculation concerning the Positive 
Electron, 15 
Pope (Sir William), Crystalline Liquids, 99 
Popoff (M.), The Respiratory System of Plants, 451 
Poppovich (Dr. N. M.), The Finitistic Theory of Space, 1@r 
Porter (Dr. Annie), Some Modern Developments in 
Animal Parasitology, 162 
Porter (Prof. A. W.), Single Crystals of Aluminium and 
other Metals, 362; and J. J. Hedges, The Law of 
Distribution of Particles in Colloidal Suspensions 
with Special Reference to Perrin’s Investigations. 
Pt. II., 382 
Portevin (A.), The Variations of Capacity accompanying 
the Thermal Treatment of Hollow Steel Bodies, 554 ; 
and F. Le Chatelier, A Phenomenon observed during 
the Test by Extension of Alloys in Course of Trans- 
formation, 383; and P. Chevenard, The Dilatometric 
Study of the Alloys of Aluminium with Magnesium 
and Silicon, 275 . 
Poulton (Mrs. Emily), gift for a prize in natural scienc 
at Oxford, 724 
Poulton (Prof. E. B.), elected president of the Association 
of Economic Biologists, 196 
Pownall (C. H.), The Writing of Malay, 581 
