710 



INDEX. 



Silk-worms and violet light, 274. 

 Silks and woolens, cleaning, 474. 

 Silliman, Prof., liv. 

 Silver coating of fibres, 560. 



new way of cleaning, 504. 

 Silvering glass, new method of, GOT. 



glass vessels, 561. 

 Simmons, Mr., 71, 487. 

 Simon, Mr., Ixxxii., xcix. 

 Simonin, Mr.,549. 

 Simonsen, Capt., 202. 

 Sinai, Mount, 234, 

 Singenite, a new mineral, 193. 

 Sirins, satellite of, 25. 

 Sirocco carries sand from Africa, 233. 



in Jerusalem, 67. 

 Skin, suppression of excretions of the, 



272. 

 Skull, diluvial, of Nagy Kap, 280. 

 Sky, blue color of the, 230. 

 Slack, Dr. J. H., cxv., 459. 

 Slag, ashes, etc., for building-stone, 512. 

 Smallwood, Dr. Charles, xxxiv., 685. 

 Smee,Mr. A. H.,3S1. 

 Smith, Mr., 43S. 



Mr. F. J., 155. 

 Mr. G., 274. 

 Mr. Henry, Ixxx. 

 Mr. Leigh, Ixiii., 397. 

 Mr. Willoughby, 150. 

 Prof. Hamilton L., 270, 593. 

 Prof. S. I., xcviii. 

 Smith's monograph of the diatoms, 270. 

 Smithsonian Institution, xx., xxi., xxx., 



xcix., cv., 66, 67, 75, 122, 280, 339, 349. 

 Smitt, Pi'of., xcvi. 

 Smock, Prof. John C, 203. 

 Smyth, Prof. C. P., 62. 

 Snake bites and artificial respiration, C29. 



Chinese remedy for, 630. 

 Snelus,Mr.,523. 

 Snow, limit of perpetual, 85. 

 meteoric dust in, 209. 

 Soap, improved, 473. 

 Soaps, proper combinations in, 4S7. 

 Society of Telegraphic Engineers, 670. 

 Socoloff, Mr., 272. 



Soda, acetate of, for preserving food, 476, 

 498. 

 and polassa (sulphate), for bleach- 

 ing, 602. 

 carbonate of, for burns, 630. 

 hydrosulphite of, for indigo, 604. 

 manufacture of, cxxvii. 

 purification of caustic, 5C3. 

 sulphite of, for bleaching, 603. 

 Soil, organic substances in, 385. 



silex in, 384. 

 Solar atmosphere, absorption of the, 23. 

 spectrum of the, 40. 

 heat reflected from Lake Geneva, 155. 

 rays, chemical force of, 186. 

 pots and protuberances, 3, 4. 

 and rain-fall, 123. 

 magnetism, and auroras, 46, 47. 

 system, stability of the, 38. 

 Solidification of nitrous oxide, 183. 

 Sollas, Mr., liii. 

 Somerville, Mr., cxxx. 

 Sommer, Mr. E. J., 253. 

 Sonstadt, Mr., 180. 

 Sortais,Mr.,537. 

 Sounding-lines, improved, 235. 

 Sounds, analysis of compound, l.^C. 



South America, nitre in, 191, 



South polar explorations, 221, 



Soy, Chinese preparation of, 505. 



Space, resisting medium in, 51. 



Spalding, Mr., Ixxxii. 



Species of plants in th^ United States de- * 



scribed in 1873, 375. 

 Spectra of the sun's limb and centre, 45. 



of simple and compound bodies, 

 153. 

 Spectroscope-micrometer, new, 136. 

 Spectroscopic observations of the transit 



of Venus, 52. 

 Spectrum of the solar atmosphere, 40. 

 Sperenburg well, 65. 

 Sphoeria typhina, 400. 

 Spinelli, Mr., 96. 



Spitzbergeu, recent explorations in, 262. 

 Sponge trade, 569. 

 Spontaneous combustion of hay, 423. 



of oily cotton- 

 waste, 609. 

 electric currents, 126. 

 Sporer, Mr., his observations upon the 



sun, 40. 

 Sprengel, Dr., xliv., 536. 

 Spring water on meadow-grass, 388, 

 Springmiihl, Mr,, 608. 

 Stable manure, improved use of, 388. 

 Stahlberg, Dr., 625. 

 Stall, Mr., 415. 



Standard for numbering yarn, 613. 

 Stanford, Mr. Edward C, 380, 634. 

 Stanle}^ Gen., Ixviii., 261. 

 Mr., Ixxiii., 672. 

 Star atlas. Prof. Heis', 1. 

 catalogue, American, 1. 

 shower, cometary, 12. 

 Stars, diameter of, 37. 



distribution of the, 36. 

 Statistical Congress, International, 666. 

 Statistics of Canada fisheries, 427. 



of Egyptian fisheries, 400. 

 Steam as a fire-extinguisher, 470. 

 Steam-boiler explosions, 520. 



-boilers, glycerine in, 520. 



pipes and casing for, 530. 

 -packets for engines, 521. 

 Stearns, Mr. R. E. C, 310, 332. 

 Steel and iron, union of, 591. 



experiments on the strength of, 540. 

 temper of, and magnetism, 148. 

 tempering, 562. 

 tools, hardening, 60S. 

 Steenstrup, Dr., 328, 341, 674. 

 Steever, Lieut., Ixxii. 

 Stefan, Mr., 171. 

 Steinberg, Mr., 326. 

 Stellar photometry, 58. 

 Stephan, Prof., xxxvi., 15, 37, 50. 

 Sterlet, culture of, 452. 

 Sterling, Dr. Elisha T., 441. 

 Stevens, Mr. E. A., 675. 

 Mr. H., 262. 



Institute of Technology, 674. 

 Stevenson, Mr. James, 251, 309. 

 Prof. J. J., 200, 254. 

 Stewart, Dr. J. Lindsay, 685. 

 Stieda, Dr., cii. 

 Stinde, Dr., 490. 

 Stockhardt, Prof., 410. 

 Stockwell, Mr., xxi., 38. 

 Stohman, Mr., cvii. 

 Stone, artificial, cxxv. 



