‘ 
Nature, al 
June 3; eau 
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LINDO EX: 
ApBE (Dr. C., jJuN.), the Climate of Alaska, 212 
Abel (N. W.), Sa Vie et Son CEéuvre, Ch. Lucas de 
Peslotan, 603 
Abetti (Prof.), Comet 1906 g, 137 
Abold (Herr), Search-ephemeris for Comet 1goo III. 
(Giacobini), 498 
Abruzzi’s (The Duke of the) Ascents in the Ruwenzori 
Range, 282 
Acoustics: Wireless Telephony Experiments, Prof. Slaby, 
227; Church Bells Cracked by Sound Waves Produced by 
Explosions or Heavy Firing, 541 
Actinium, the Production of Radium from, Bertram 
' Boltwood, 54; Prof. E. Rutherford, F.R.S., 270 
Actinium and Helium, Radium, H. S. Allen, 126 
Action of Tram-car Brakes, the, 86 
B. | 
Adams (Prof. Frank D.), Geological Survey of Canada, | 
149; an Investigation into the Elastic Constants of 
Rocks, more Especially with Reference to Cubic Com- 
pressibility, 451 
Adams (J.), Guide to the Principal Families of Flowering 
Plants, 29 
Adams (Walter S.), 
Spectra, 113 
Aérodynamics: Institut aérodynamique de Koutchino, 609 
Aérography, a Résumé of, L*’Abbé Th. Moreux, 231 
Aéronautics: the First ‘‘ Manned’’ Flying Machine, 35; 
the Balloon Milano’s Journey from Milan to Aix-les-Bains, 
60; Santos Dumont’s Airship, 61; the Flight Problem, 
82; the Flying Fish Problem, Lieut.-Colonel C. D. 
Durnford, 109; the 1906 Zeppelin Airship, Dr. Wilhelm 
Krebs, 229; North Pole Expedition, Walter Wellman, 
540; the Exploration of the Air, Major B. F. S. Baden- 
Powell, 551; the Belgian International Balloon Service, 
572; an Aéronautical Exhibition, Prof. G. H. Bryan, 
F.R.S., 585 
“Etiology of Leprosy, 412 
Africa : Geological Research in South Africa, 115; Mollusca 
collected by S. A. Neave in South-east Rhodesia, 
J. Cosmo Melville and R. Standen, 216; the Duke of the 
Abruzzi’s Ascents in the Ruwenzori Range, 282; the 
Ruwenzori Boundary Dispute, 321; the Snow-peaks of 
Ruwenzori, 500; the Geology of the Oban Hills (Southern 
Nigeria), J. Parkinson, 286; Return of Lieut. Boyd 
Alexander, 398; the Forest-pig of Central Africa, Prof. 
Henry H. Giglioli, 414; the Brachyurous Crustacea of 
the Third Tanganyika Expedition, Dr. W. A. Cunnington, 
527; the Lower Niger and its Tribes, Major Arthur Glyn 
Leonard, 602; Wissenschaftliche Beihafte zum Deutschen 
Kolonialblatte, Dr. Ottweiler, 616; Mitteilungen aus dem 
Deutschen-schutzgebieten ; Die Niederschlags-verhaltnisse 
von Deutsch-sudwestafricka, Dr. F. 
Character and Cause of Sun-spot 
616 
Agar (W. E.), Development of the Anterior Mesoderm and 
Paired Fin in Lepidosiren and Protopterus, 455 
Agathocles, the Position of, during the Eclipse of B.c. 310, 
August 15, P. H. Cowell, F.R.S., 10 
Aggregates, the Theory of Sets of Points, W. H. Young and 
G. C. Young, 193 
Agriculture: Experiments at the Cawnpore Experimental 
Farm, 12; Cotton: its Cultivation, Marketing, Manu- 
facture, and the Problems of the Cotton World, Prof. 
C. W. Burkett and C. H. Poe, 27; Cotton Cultivation 
von Dunckelman, | 
Air and Nitrogen, 
in India, 109; Cotton Cultivation in the Bombay Presi- 
dency, F. Fletcher, 207 ; Cotton Cultivation in the United 
States of America, 226; Forecast of the Indigo Crop of 
Bengal for 1906, 37; Indigo Culture in India, 10g; Cyril 
Bergtheil, 497; Gumming of Sugar-cane Plants, N. A. 
Cobb, 38; Microbiologie Agricole, Dr. Edmond Kayser ; 
Prof. R. T. Hewlett, 99; Indian Output of Sugar, 157; 
Artificial Fertilisers, A. D. Hall at Society of Arts, 185 ; 
the American Gooseberry-mildew, 160, 613; E. S. Salmon, 
247; Silk-worm Culture, K. Toyama, 255; Agricultural 
Education and Research, 394; the Principles and Prac- 
tice of Agricultural Analysis, Dr. H. W. Wiley, 458; 
Mexican Cotton-boll Weevil, 495; a New Gooseberry 
Pest, W. E. Collinge, 496; Termes gestrot, a White Ant 
Rubber Pest, E. P. Stebbing, 516; Diseases of Fruit 
and Fruit-bearing Plants, 532; the Weather and the 
Crops, R. H. Hooker, 545; Agricultural Experiments, 
594; Experiments on Tomato Seedlings, E. P. Sandsten, 
594; Variation in the Composition of Milk, Dr. Alex 
Lauder, 594; Lucerne treated with Hiltner’s Inoculating 
Material, 595 
Inversion Temperatures for, Prof. K. 
Olszewski, 379 
Aitken (Mr.), Comet 1906 g (Thiele), 231 
Alaska: Coal Resources of the Cape Lisburne Region, 
A. J. Collier, 256; the Rampart Gold-placer Region, 
L.. M. Prindle and F. L. Hess, 256 
| Albe (E. E. Fournier d’), the Electron Theory; a Popular 
Introduction to 
Magnetism, 292 
Albedoes of the Superior Planets, the, J. E. Gore, 615 
Albrecht (Dr. Sebastian), Line Intensity and Spectra 
Type, 304 
Albrecht (Prof.), Wireless Telegraphy in Longitude Deter- 
minations, 544 
Alden (W. C.), the Delavan Lobe of the Lake Michigan 
Glacier, 184 
Aldin (W. C.), the Drumlins of South-eastern Wisconsin, 
182 
Alexander (Lieut. Boyd), Return of, 398 
Algebra, a College, Prof. H. B. Fine, 74 
Algué (Rev. José), the Hong Kong Typhoon, 211-2 
Allen (H. S.), Radium, Actinium and Helium, 126 
Allen (H. Stanley), Photoelectric Fatigue of Zinc, 262 
Allen (Mr.), Minerals of the Composition MgSiO,, 596 
Allen (fT. Fenwick), Some Founders of the Chemical 
Industry, Men to be Remembered, 100 
Allorge (M. M.), Obituary Notice of Prof. Marcel Bertrand, 
the New Theory of Electricity and 
441 
Alloys of Aluminium and Copper, on the Properties of, 
Prof. H. C. H. Carpenter and C. A. Edwards at the 
Institution of Mechanical Engineers, 426 
Alpini, I grandi Trafori, G. B. Biadego, 291 
Alternating Currents: a Text-book for Students of Engin- 
eering, C. G. Lamb, 97 
Amazonicum Arboretum, Museu Paraense de 
Ethnographia, Dr. J. Huber, 459 
Ambronn (Prof.), Comet 1906 g, 137 
America: Cotton: its Cultivation, Marketing, Manufac- 
ture, and the Problems of the Cotton World, Prof. 
C. W. Burkett and C. H. Poe, 27; Cotton Cultivation 
in the United States of America, 226; Mineral Resources 
é 
Historia e 
