CONTENTS TO VOLUME V. 



Number 25. 



Page 



Art. I. — A new Harmonic Analyzer; by A. A. Michelson 

 and S. W. Stratton. (With Plate I.) - - - 1 



II. — A New Form of Physical Pendulum ; by J. S. Stevens 14 



III. — The Protostegan Plastron ; by G. R. Wieland. (With 



Plate II.) ....* - -- - 15 



IV. — The Granitic Breccias of the Cripple Creek Region ; by 

 G. H. Stone _ - 21 



V. — Dispersion and Absorption of the Infra-Red Rays in 

 Rock Salt and Sylvine ; by H. Rubens and A. Trow- 

 bridge — — 33 



VI. — Studies in the Cyperacese, VII ; by T. Holm 47 



VII. — X-Rays and Mineral Phosphorescence ; by J. E. 



B urbane: 53 



VIII. — Phosphorescence produced by Electrification ; by J. 



Trowbridge and J. E. Burbank 55 



IX. — Electromotive Force ; by J. Trowbridge 57 



X.— Surface Travel on Electrolytes ; by W. E. Fiske and W. 



D. Collins.. ._ _ 59 



XI. — Iron Meteorites, as nodular structures in Stony Meteor- 

 ites ; by H. L. Preston _ . _ . _ 62 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics — Osmotic Pressure and Electrolytic Dissociation, Compton. 

 65. — Electrolytic Decomposition of Aqueous Solutions, Nernst, 66. — Direct 

 production of Iron Carbide, Moissan, 67. — Production of Peroxides in Slow 

 Oxidation, Bach, 68. — Constitution of Phosphorous acid, Michaelis and 

 Becker: Manufacture of Ammonium Cyanide, Lance, 69. — Jahresbericht iiber 

 die Fortschritte der Chemie und verwandter Theile anderer Wissenschaften : 

 Change of alternating currents into direct, L. G-raetz: Observation of air 

 waves, R. Emden, 70. — Light, visible and invisible, S. P. Thompson: Bibliog- 

 raphy of X-rav Literature and Research, 71. — Tafeln und Tabellen zur Dar- 

 stellung der Ergebnisse Spectroskopischer und Spectrophotometrischer Beo- 

 bachtungen. Tu. W. Engelmann, 72. 



Geology and Natural History — Paleozoic faunas of the Argentine, E. Katser, 72. 

 — Volcanoes of North America, I. C. Russell, 74.— British Museum Cata- 

 logue: Coral Boring at Funafuti, 75. — Origin of the Diamonds of South 

 Africa, T. G. Bonnet, 76.— Les Diamants du Cap, L. De Launay, 77.— Build- 

 ing Materials of Pennsylvania, T. C. Hopkins: Catalogue of Minerals, A. 

 B. Chester: Synopsis Mineralogica, A. Weisbach: Eighth Annual Report 

 of the Missouri Botanical Garden, 78. — Catalogue. Mammalium tarn viventium 

 quam fossilium, 79. 



Miscellaneous Scientific Intelligence — Institute of France, Cuvier Prize : Mazama, 

 A Record of Mountaineering in the Pacific Northwest : Kleinasiens Natur- 

 schatze, K. Kannenberg, 79. — Applied Mechanics, J. Perry: Fifty-second 

 Annual Report of the Director of the Astronomical Observatory of Harvard 

 College for the year ending September 30, 1897, E. C. Pickering: Ostwald's 

 Ivlassiker der exakten "Wissenschaften, 80. 



Obituary — Professor Winnecke: Rev. Samuel Haughton, D.D., 80. 



