648 



INDEX. 



Silver, ammoniacal nitrate of, 541. 

 and bisulphide of carbon, 72. 

 nitrate of, from alloy, 84. 

 Silvered-steel cutlery, 495. 

 Silvering of glass plates and globes, 495. 

 Silvestri, Mr., 119. 

 Siphon, improved, 499. 

 Size for fabrics, new, 526. 

 for paper, new, 546. 

 mould prevented in, 50S. 

 Sizing fabrics, improvement in, 527. 



gelatine, 523. 

 Skeleton from Mentone, human, 229. 

 of Baousse-Rousse, 294. 

 cave, remarkable, 226, 227, 22S. 

 Skeletons in Unalaskha, 827. 

 Skerrett, Captain Joseph R., 1S1, 196. 

 Skey, Mr., 523. 

 Skin diseases and bad soaps, 566. 



irritants, action of, 567. 

 Slack, Dr., 402. 

 Slag for road ballast, 475. 

 Slate, microscopical composition of, 119. 

 Sleep, physiology of, 595. 

 Small planets discovered in 1S72, 36. 

 Small-pox, xylol in, 561. 

 Smelt in Europe, 423. 



in fresh water, 405, 406. 

 Smith, Commissioner A. John, 622. 

 Dr. Stephen, 578. 

 Mr., 332. 



Mr. Hamilton, 310, 31S. 

 Mr. Leigh, 204. 

 Mr. Pye, 296. 



on Tomocaris peircei, 216. 

 Professor J. Lawrence, 132, 605, 007. 

 Professor Sidney J., 202, 216, 268, 



269, 440. 

 Sir Andrew, 622. 

 Smithsonian Institution, 37, 152, 201, 235, 



242, 269, 330, 332, 401, 597, 604, 610. 

 Smoke-stacks, to dispense with, 478. 

 Smyth, Mr., 145. 



Professor C. Piazzi, 15, 25. 

 Snout of the mole, sensibility of the, 2S0. 

 Snow, Mr.E.M.,57S. 

 Soaps, bad, and skin diseases, 566. 



perfumed, 567. 

 Soap-stone, articles of, 498. 

 Soda, carbolate of, 507. 



permanganate of, 508. 

 Soda-resin composition, 546. 

 Soil, potassium in, 367. 



source of nitrogen in, 367. 

 Soils, absorbent power of, 376. 



action of, in absorbing gases, 375. 

 Solar chromosphere, 34. 



eclipse of December, 1S70, 4. 

 origin of meteorites, 22. 

 outbursts and magnetical disturb- 

 ance, 34, 39. 

 protuberances and spots, Secchi on, 



3,5. 

 protuberance spectrum, j-ellow 



bright line of, 6. 

 spots, 25. 



spots and cholera, 563. 

 Solder for steel and brass, 546. 

 Soloutre, prehistoric remains at, 331. 

 Solutions, change of volume in, 100. 



solidification of, 106. 

 Somerville, Mrs. Mary, 622. 

 Soot on grape-vines, 393. 

 Sorby, Mr., 95, 357, 615. 



Sound, transmission of, in water, 80. 

 Sounding, steel wire for, 62. 

 Soundiug-lines of steel, 56. 

 Soundings between Cuba and Yucatan, 44. 

 South African diamonds, meteoric orijrin 



of, 118. 

 South America, temperatures in, 43. 

 South American glaciers, 130. 

 South Polar research, 170. 

 Southern coast, bluefish on, 265. 

 Sows, preventing, devouring their young, 



388. 

 Spawning of herring, 422. 



of menhaden, 425. 

 of the sterlet, 442. 

 Spectra of the planets, 9. 

 Spectroscope for testing wine, 357. 



Young on the, 75. 

 Spectroscopical phenomena of Argus, 8. 

 Spectroscopists, society of, Italian, 3. 

 Spectrum of Neptune, 38. 

 of the aurora, 14. 

 of zodiacal light, IS. 

 Spence, Mr. James M., 179, 478. 

 Sperm-oil, mineral, 536. 

 Spirits of turpentine for washing, 458. 

 Spitzbergeu, alteration of its map, 148. 

 Spots, removing, from clothing, 468. 

 Spratt, Captain, 5S. 

 Spring, Mr. Antoine Joseph, 353. 

 Springmiihl, Mr., 522, 527. 

 Spruce, new parasite of the, 343 

 Stanley, Mr., 163, 164, 177, 179. 

 Stannous hydrate of tin, 545. 

 Starch, brilliant and economical, 472. 

 improved, 459. 



action of, upon aniline colors, 50S. 

 Stark, Professor, 160. 

 Stars, drifting of, 27. 



falling, 20. 



proper motions of, 25. 



their movement in space, 7. 

 Stas, Mr., 534. 



Stassfurt, mineral works at, 108. 

 Statistics, fishing, of Great Britain in 1S69, 



443. 

 Steam-boiler, improved, 490. 

 Steel and brass solder, 546. 

 cutlery, silvered, 495. 

 sounding-lines, 56. 

 Mushet's special, 495. 

 wire for soundings, 62. 

 Steenstrup, Mr., 293. 

 Steever, Lieutenant E., 177. 

 Steindachner, Dr., 10, 204. 

 Steller, Mr., 247. 

 Stenberg, Professor, 504. 

 Stengle, Professor, 305. 

 Stenhouse, Dr.,5S6,616. 

 Stephan, Professor, 80. 

 Stephenson, George, memorial hall to, 597. 

 Stereochromic pictures, ground for, 502. 

 Stereoscopic pictures, transparent, 503. 

 Sterlet, spawning of, 442. 

 Stevenson, Mr. James, 197, 199. 

 Stewart, Mr., 9. 

 Stilwell, Mr., 439. 

 Stimpson, Dr., 44, 154, 610, 611, 622. 

 Stohmann, Professor F., 394. 

 Stokes, James, Jnn., 159. 

 Stone age, chronology of, 353. 



implements, British, 225. 



Mr. 25 263. 



Mr. Livingston, 402, 441, 445. 



