652 



INDEX. 



Simon, Mr., ccxxi. 

 Simplon Pass, tunneling the, cclvii. 

 Sivel, Mr., xli., 472, 501. 578. 

 Slack, Mr., cxxxvii.,cxxxviii., cxl., 410. 

 Slate for engravers, 514. 

 Smelt, artificial hatching of, 421. 

 Smirke, Sir E., 595. 

 Smith, Mr., cxvii., 458, 4S9. 

 Mr. Edwin, 58. 

 Mr. Eugene, xcix. 

 Mr. George, clxiii., cclxxvi. 

 Mr. Henry J. S., 5S3. 

 Mr. Hermann, 131. 

 Mr. J. E., cxxxviii. 

 Mr. J. L., Ixxxii., 538, 585. 

 Mr. S. I., cxxv., clxxxvi., 573. 

 Mr. W. Harold, 460. 

 Mr. W. Sooy, 490. 

 Mr. Worthington G., cxliii., ccxiii., 



395, 407. 

 Prof. Sanderson, cxxv. 

 Smithsonian Institution, xix., cxxv., cli., 



clxiv., cclx., 

 294, 299, 302, 

 343, 363, 588. 

 prehistoric col- 

 lection from 

 Porto Rico, 

 cliv. 

 Smoking meat, 448. 

 Smoky quartz at Pike's Peak, xcvii. 

 Smysloff, Mr.,33. 



Smythe & Duncan, Messrs., xxxi. 

 Soap, transparent, 441. 

 Soda and potash, caustic, 540. 

 Sodium flame, a monochromatic, 137. 

 Soil, conductivity of, for heat, 63. 



removal of acid from, 3S0. 

 Solar atmosphere, 13. 



dials of the ancients, lxiv. 

 disk, isotherms of, 42. 

 eclipse, a famous, 40. 

 parallax, xxvi. 

 radiation, 14, 15. 



in Egypt, 42 

 spectrum, white lines in, 11. 

 spots, 10. 



ancient observations of, 12. 

 Zollner's theory of, 12, 24. 

 spots and rainfall, 79. 

 system, chemistry of, 40. 

 Soldering platinized glass to metals, 545. 

 Solution of numerical equations, 6. 

 Solutions, effect of, on a growing vine, 



366. 

 Sorby, Mr. H. C, cxi., cxxxiv., clxxix., 



cciii., 136, 170. 

 Soret, Mr., 138, 143. 

 Sosnovsky, Capt., cxxviii. 

 Sound and light, movement of the ob- 

 server on, 131. 

 reflection of, 128. 

 Soundings of the "Challenger," cxlix. 



of the " Tuscarora," cl. 

 Souter Point light-house, 150. 

 South, Sir James, 39. 

 Southwell, Mr. Thomas, 90. 

 Spalding, Mr., cciv. 



Specific gravity and magnetism of iron, 

 124. 

 heat and cubic expansion, 156. 

 of carbon, boron, and sili- 

 con, 213. 

 Spectacles protecting from dust, 446. 



Spectra of some rarer metals, 134. 

 of the faint stars, 9. 

 of the least fusible metals, 133. 

 variation of gaseous, 133. 

 Spectroscope, advantageous construction 

 of, 136. 

 for stars, simple, 133. 

 with a fluorescent ocular, 

 138. 

 Spectrum analysis, Ixv. 



beginnings of, 134. 

 effect of pressure and tempera- 

 ture on, 135. 

 lines, new tables of, 135. 

 of the Aurora Borealis, 26. 

 Spencer, Mr. Herbert, cliv., clxiii., clxxii. 

 Spinach, new kind of, 391. 

 Spiders, clxxxix. 

 Spiller, Mr.,442. 

 Spinelli, Mr. Croce, xli. 

 Spitzbergen, atmospheric electricity in, 



157. 

 Spofford, Mr. A. R.,5S6. 

 Spon, Mr. Ernest, 531. 

 Sponges, North American, clxxix. 

 Spottiswoode, Mr., lxx., lxxiv. 

 Sprengel, Mr. J. William, clxi., cclxxx. 

 Spring, Mr. Walter, 156. 

 Spring-water, electrical condition of, 101. 

 Squier, Mr. E. G., clx., 332, 571. 

 Stade (Hans), captivity of, clxvi. 

 Stadiometer, the, 304. 

 Stahlberger, Prof., 107, 113. 

 Staircases, construction of winding, 468. 

 Stamping-ink, 513, 527. 

 Standard time in Pittsburgh, 3. 

 Standfield, Mr. John, 508. 

 Stanford, Governor Leland, 435. 

 Stanley, Mr. J. M., cxxix. 

 Star, a fine double, 6. 

 Star-charts, constructing, 37. 

 Starching linen, 522. 

 Stars, scintillation of, 9. 



simple spectroscope for, 133. 

 spectra of the faint, 9. 

 Statistics, industrial, ccxxix. 

 Steam fog-whistles, 129. 

 Steam-boilers, copper-lining, 4S7. 

 evaporation in, 497. 

 -pipes, casing for, 473. 

 -power on canals, ccxlvii. 

 Stearns, Mr., 471. 

 Steel car-wheels, ccxxxix. 

 compressing, cclxv. 

 direct from ore, 461. 

 phosphorus, cclxiii. 

 production, ccxxxiv. 

 Tungsten, 464. 

 vessels, strong, 493. 

 Steenstrup, Mr., 347. 

 Stefan, Mr., 121. 

 Stein, Mr., cclxxxix. 

 Steinheil, Mr., 472. 

 Stellar spectra, photographs of, 11. 

 Stenhouse and Groves, Messrs., lxxxviii. 

 Stephan, Mr., xxviii., xxxii. 

 Stephenson, Captain Henry, cxix. 

 Stern, Mr. H., cclxxxix. 

 Sternberg, Dr. George, clii. 

 Stewart, Mr. Balfour, 119. 

 Stieda, Dr., ccii. 

 Stierlien, Mr., xciv. 

 Stimpson, Dr., clxxxvii. 

 Stockwell, Mr., xx. 



