Nature, | 
October 1, 1914 
Lnadex 
XXIll 
Africa, Prof. G. Potts, 623; Schools and Employers 
in the United States, Miss W. Jevons, 627; the 
Thinking Hand: Practical Education in the Elementary 
School, J. G. Legge, 633; Dr. Montessori’s Own Hand- 
book, 659; Montessori Method and American Schools, 
Prof. F. E. Ward, 659; Path’ to Freedom in the School, 
659; Board of Education Circular on Geometry, 686 
Life-history, Dr. Grassi; Einar Lea; A. Bowman, 
164; Elvers, J. S. Elliott, 249 
Eelworm Disease of Rice, Dr. E. J. Butler, 96; Means of 
Collecting Eelworms, Miss. M. V. Lebour and T. H. 
Taylor, 242 
Egg Laying Competition, 221; Centrifuged Egg of Frog, 
Dr. Jenkinson, 359 
Egypt: Ancient Custom of Killing the King, Miss M. A. 
Murray, 14; Gravity Determinations, P. A. Curry, 17; 
Egyptian Art, Sir G. Maspero, Elizabeth Lee, 210; 
Eel, 
Humphrey Gas Pumps for draining Lake Mareotis, | 
436-7; Egyptian Mummies, Prof. G. 
E. Smith, 566; 
Coptic Cloths, Prof. F. Petrie, 567 
Elastic Limits under Alternating Stress Conditions, C. E. 
Stromeyer, 340; Elasticity and Resistance of Bricks, 
Stone, Mortar, Cement, A. Montel, 609 
Electric Arc: Effect of Variation of Voltage on Arc with 
Alternating Current, M. Hamy, and M. Millochau, 
232; Absorbing Power of Electric Arc for its own 
Radiations, G. Gouy, 207 
Axis of Human Heart, Dr. A. D. Waller, 313 
Currents: Alternating Currents, Dr. Rhodes, 54; Capt. 
Hall, 477; Persistence of Currents without E.M.F. in 
Super-conductors, H. K. Onnes, 481, 524; Measure- 
ment of Alternating Currents of High Frequency, A. 
Campbell and D. W. Dye, 522 
Discharge of Narcine, Dr. W. A. Jolly, 
Emissivity at High Temperatures, Dr. 
and W. F. Higgins, 189, 340, 561 
Engineering : Primer on Alternating Currents, Dr. W. G. 
Rhodes, 54; Single Phase Commutator Motors, F. 
Creedy, 54; Allgemeine Elektrotechnik, Prof. P. Janet, 
F. Suchting and E. Riecke, 54; Electric Power Supply 
in London, 198; Uses of Inductance Coils or React- 
ances, K. M. Faye-Hansen and J. S. Peck, 222; Hydro- 
electric Plant on the Mississippi, 250; Switchgear and 
Control of Circuits, A. G. Collis, 477; Elementary 
Theory of Alternate Current Working, Capt. G. L. 
Hall, 477; Electricity in Mining, Siemens _ Bros. 
Dynamo Works, Ltd., 477; Electric Circuit Theory 
and Calculations, W. P. Maycock, 477; Circular issued 
by Council of Institution of Electrical Engineers rela- 
tive to the War, 650 
Field: Analogy to Zeeman Effect, J. Stark, 280; Effect 
on Spectrum Lines, Prof. Stark and others, 360 
Foam Walls, Prof. Quincke, 198 
Lamps: Thermionic Current in Carbon Filament Lamp, 
Prof. A. S. Eve, 32; Development of the Incandescent 
Electric Lamp, G. B. Barham, 54; Unidirectional 
Currents in Carbon Filament Lamp, F. Ll. Hopwood, 
84; Experiments with an Incandescent Lamp, C. W. S. 
Crawley and Dr. S. W. J. Smith, 367 
Power, London Supply: L.C.C. Report, 566 
Resistance : Changes due to Longitudinal and Transverse 
Magnetisation of Iron, Dr. C. G. Knott, 420; Demon- 
stration of Ampére Molecular Current in a Perfect 
Conductor, Prof. H. K. Onnes, 481, 524 
Traction, Railless, 120 
Waves and the Total Solar Eclipse, 68; Transmission of 
Electric Waves round the Bend of the Earth, Dr. W. 
Eccles, 321, 351 
Electricity : Electrical Condition of a Gold Surface during 
Absorption of Gases, H. Hartley, 75; Null Method of 
Testing Vibration Galvanometers, S. Butterworth, 367 ; 
Cours de Physique Générale, Tome I., H. Ollivier, 
502; Electrification of Water by Splashing, J. J. Nolan, 
522 
Electricity, Atmospheric: Potential Gradient in Industrial 
Districts, D. W. Steuart and I. Jérgensen, 207; Com- 
parisons for Kew and Eskdalemuir, G. Dobson, 588 
Electrolytes : Permeability of Echinoderm Eggs to Electro- 
lytes, J. Grav, 8; Application of Electrolytic Luminosity, 
L. H. Walter, 394; Electrolytic Rectifier, Messrs. 
Tsenthal, 487 
577 
G 
. W. C. Kaye 
Electromagnetism : das Relativitatsprinzip, Leo Gilbert, 56; 
Electromagnet to give Magnetic Field of 100,000 gauss, 
H. Deslandres and A. Perot, 102 
Electronic Theories of Conduction through Metals, Prof. W. 
Wien, 93; Initial Velocities of Photo-electric Electrons, 
G. A. Dima, 395 
Elements of the Seventh Group of the Periodic System, 
Prof. R. Abegg, Dr. F. Auerbach, 184 
Elephant, Malay Race of Indian, R. Lydekker, 
Elephant Protection in Assam, 567 
Elizabeth Linnazus Phenomenon, Prof. F. A. W. Thomas, 
348 
Blizabethan Cookery-book, Cath. F. Frere, 53 
Elvers in the Ouse, J. S. Elliott, 249 
Embryology: Text-book of General Embryology, Prof. 
W.E. Kellicott, 106; Zelien-und Gewerbelehre Morpho- 
logie und Entwicklungsgeschichte, E. Strasburger und 
O. Hertwig, and others, 106; Entwicklungsgeschichte 
der Wirbeltiere, und Entwicklungsmechanik, Dr. O. 
Levy, 106; Terminologie der Entwickelungsmechanik 
der Tiere und Pflanzen, W. Roux, 131; Outlines of 
Chordate Development, Prof. W. E. Kellicott, 295; 
Centrifuged Egg of Frog, Dr. Jenkinson, 359; Leit- 
faden fir das Embryologische Praktikum, Prof. ‘A. 
Oppel, 606; Notes, 619 
Emulsions, Cellular Structure of, Prof. K. Grant, 162; 
Sir joseph, Larmor, 213;) Drs CG. Ha Desch, 7214 7H. 
Wager, 240; Prof. W. M. F. Petrie, 269; C. -R. 
Darling, 376; Clay Suspensions, B. A. Keen, 321 
Engineering: Congress at San Francisco in 1915, 65; 
Engineering Workshop Exercises, E. Pull, 108; Utilisa- 
tion of Ground near Harbours and Stations, H. Ollen- 
dorff, 120; Studies in Water Supply, Dr. A. C. 
Houston, 133; Water: its Purification and Use in the 
Industries, W. W. Christie, 133; Practical Science for 
Engineering Students, H. Stanley, 236; Schilowsky 
Gyroscopic Two-wheeled Car, Prof. Boys, 251; Wooden 
Trestle Bridges and Concrete Substitutes, W. C. Foster, 
267; Mechanical Engineer’s Reference Book, H. H. 
Suplee, 295; Kelvin Medal, 327; Engineering Index 
Annual, 1913, 453; Railways, E. Protheroe, 501; 
Manual for Masons, etc., Prof. v. d. Kloes, A. B. 
Searle, 530; Suspension Bridges, Prof. W. H. Burr, 
609; Technical Mechanics, Statics, and Dynamics, 
Prof. E. R. Maurer, 609; Mechanical Refrigeration, 
Prof. H. J. Macintire, 609; the Human Factor in 
Works Management, J. Hartness, 609; Elasticita e 
resistenza dei corpi pietrosi, etc., Ing. A. Montel, 609 ; 
Vibrations of Structures, due to Earth Tremors, Prof. 
L. Grunmach, 627; see also Electric Engineering 
Engines: Farm Gas Engines, Prof. Hirshfeld and T. C. 
Ulbricht, 265; Diesel Engine, Prof. G. J. Wells and 
A. J. Watlis-Tayler, 265; Fireless Locomotive for 
Explosive Depét, 671 
English Year: Autumn and Winter, W. B. Thomas and 
A. K. Collet, 353 
Enhanced Manganese Lines, F. E. Baxandall, 278 
Entomology : Cocoon of Lyonetia clerkella, 66; Mechanism 
of Suction in Lygus pabulinus, P. R. Awati, 101; 
Heteromerous Coleoptera from New Guinea, K. : 
Blair, tor; Notes, 169; Canadian Entomological 
Service, 226; Termites, T. Petch, 466; Wing-venation 
of Odonata, R. J. Tillyard, 525; see also Insects 
Entropy Formula, Dr. K. F. Herzfeld, 302 
Enzyme Action, H. S. Barendrecht, 39 
Epilepsy Treatment by Snake Poison, A. Calmette and A 
Mézie, 128 
Equations of Fifth Degree, Icosahedron and, Prof. Klein, 
Dr. Morrice, 662 : 
Ergot, Isolation of Acetylcholine from, A. J. Ewins, 9 
Eros Opposition, 488 
Eskimo, My Life with the, V. Stefansson, 400 
Essex River System, Prof. J. W. Gregory, 232 
Ethnology : Gypsy Bibliography, Dr. G. F. Black, 4; Pre- 
historic Cave Paintings, Dr. Capitan, 1’Abbé Breuil, and 
others, Dr. W. Wright, 9; Gipsy Coppersmiths in Liver- 
pool, Andreas, 57; Languages of Borneo, S. H. Ray, 
118; the Golden Bough, Prof. J. G. Frazer, A. E. 
Crawley, 157, 476; Frazer Fund, 312; Africa, Sir H. H. 
Tohnston, 274; Stone Technique of the Maori, E. Best, 
Dr. A. C. Haddon, 298; Chilula Indians, 300; Marriage 
102 ; 
