INDEX. 



571 



OBITUARY— co/if. 



Johnson. S. W., 292, 405. 



Newcomb, S., 196. 290. 



Whifceayes, J. F.. 508. 

 Observations Meridiennes, Bouquet. 



506. 

 Observatory, Allegheny, 565 ; Har- 

 vard College, 565. 

 Oklahoma oil and gas production, 



560. 

 Olcott, T. F., Teleoceras from the 



Miocene of Nebraska, 403. 

 Ostwald, W., Chemistry, 495. 

 Ostwald's Klassiker der Exakten 



Wissenschaften, 507. 



Palache, C, connellite and chalco- 



phyllite, Arizona, 537. 

 Palmer, C., arizonite, ferric meta- 



titanate, 353. 

 Parsons, C. L., Mineralogy, 563. 

 Peale, A. C, application of the term 



Laramie. 45. 

 Peirce, B. O., magnetic properties of 



Norway iron. 1. 

 Periodic Law, Garrett, 554. 

 Perkins, C. C, determination of free 



iodine. 33. 

 Perret, F. A., Vesuvius, 413. 

 Petroleum, genesis, Becker, 499. 

 Phrenology, Spurzheim and Elder, 



88. 

 Physics, Duff. 556 ; Culler, 557. 

 Pogue, J. E., Jr., mineral notes, 187 ; 



ancient volcanic rocks of No. Caro- 

 lina, 218. 

 Positive rays, Wien, 555. 

 — excitement by ultra-violet light, 



Dember. 496. 

 Psycho-Biologie, Henry, 88. 



Radio-activity of potassium salts, 



Henriot and Vavon, 409. 

 Radium, absorption of the /-rays by 



lead, Taomikoski, 76. 



— Chemical action of penetrating 

 rays, Kernbaum, 408. 



— emanation, electric discharges, 

 Debierne, 494. 



Rankin, G. R., binary systems of 

 alumina with silica, etc., 293. 



Rays, alpha, retardation by metals, 

 Taylor. 357. 



— magnetic, etc., Righi, 77. 



— positive, Wien, 555. 



excitement by ultra-violet light, 



Dember, 496. 

 See Rontgen. 



Read, H. L., determination of chlor- 

 ine, 544. 

 Ries, H., Clay- Working Industry, 563. 

 Righi, A., La Materia Badiante, 77. 



ROCKS. 



Ancient volcanic rocks of North 



Carolina, Pogue, 218. 

 Granite, Lighthouse, near New 



Haven, Conn., Ward, 131. 

 Igneous Rocks, Iddings, 502. 



Natural History, Harker, 503. 



Pegmatite, Massachusetts. Warren, 



449. 

 Rocks from the Olympic Mts., 



Washington, Arnold, 9. 

 Yamaskite, related rock, from the 

 Monteregian Hills, Canada, 71. 

 Rohwer, S. A., fossil insects from 



Colorado, 533. 

 Rurer, R., Elements of Metallo- 

 graphy, 554. 

 Rontgen rays, polarization, Herweg, 



76. 

 refraction, Walter and Pohl, 76. 



Salet, P., Spectroscopie Astrono- 



mique, 556. 

 Salt, occurrence, etc., Buschman, 83. 

 Savage, T. E., Ordovician and Silu- 

 rian formations in Illinois, 509. 

 SchafferSjV., Influence Machines, 79. 

 Sellers, J. F., Chemical Analysis, 554. 

 Seward, A. C, Darwin and Modern 



Science, 505. 

 Shepherd, E. S., binary systems of 



alumina with silica, etc., 293. 

 Silicates, relation of refractive index 



and density, Larsen, 263. 

 Smith, B., Miocene drum fish, 275. 

 Solutions, absorption spectra, Jones 



and Anderson, 78. 

 Sound, Text-book, Barton, 77. 

 Specific heats of silicates and plati- 

 num, White, 334. 

 Spectra of solutions, absorption, 



Jones and Anderson, 78. 

 Spectroscopie Astronomique, Salet, 



556. 



Taylor, T. S., retardation of alpha- 

 rays by metals, 357. 



Twenhofel, W. H., Silurian section 

 at Arisaig, Nova Scotia, 143. 



