INDEX. 



631 



Sewer, of Cement, 407. 

 Sewing-machine on Health, 555, 5SS. 

 Seyffarth, Dr., 492. 

 Shagreen, Artificial, 50T. 

 Shafer, Prof., 84, 101. 

 Sharpey, Dr., 603. 

 Sheep-shearing, 41S. 



-washing, 41 S. 

 Shell-heaps in New Brunswick, 1S2. 

 Shells, Fossil, color of, 224. 

 Sheriug, Mr., 51T. 

 Shimer, Mr., 353. 



Ships' Bottoms, Coatings for, 403. 

 Sibbald's List of Birds, 190. 

 Sidebotham, Mr., 317. 

 Sieboldia in China, new Species, 205. 

 Signal Lamp, Inextinguishable, 527. 



Lights, pale Yellow, 417. 

 Silesia, Upper, 22S. 

 Silica, Alkaline Solution of, 405, 40S. 



Hydrate of, 411. 



in Paint, 406. 



Liquid, for lining Tin Vessels, 494. 



Natural, 405. 

 Silk, Gilding and Silvering, 61. 



Goods, detecting Adulterations of,510. 

 in Fabrics, Detection of, 4S1. 

 Japanese Coloring, 443. 

 Silk-worm Disease and Nitrogen, 2S8. 



in California, 330. 

 Silphium Laciniatum, 235. 

 Silver Alloy, Third, 54. 



Brittle, 7S. 



Lac, French, 525. 



Mine at Lake Superior, 92. 

 Silvery Coating of Metals, Test of, 54. 

 Siemens, Mr., 391. 

 Simiadse, 15S. 

 Sismondi, Mr., 99. 

 Sitchian Province, 152. 

 Size for Cotton and Linen, 441. 

 Sizing Materials, 450. 

 Skeletons, Platycnemic, 242. 

 Skey, Mr., 53, 54, 67, 565. 

 Skin-grafting, 172. 

 Skins of Animals, Removing, 3SC. 

 Skulls of Hindoos, 245. 

 Slack, Dr., 217. 

 Slides of Land, 98. 

 Small-pox in England, 5S2. 

 in the North, 240. 

 Subjects, 581. 



value of Revacciuation, 5S1. 

 Smith, Mr. J., 290, 426. 



Mr. Sidney J., 141. 

 Smithsonian Institution, Washington, 192, 

 224, 27S, 607. 



Meteorological Publications, 

 29. 

 Smoke, Combustion of, 75. 

 Smythe, Prof. Piazzi, 26. 

 Snails and the Flowers of Rhodea, 294. 

 Snake-bite and Sealing-wax, 573. 



-bites, Cure for, 175, 176. 

 Dr. Fayrer on, 577. 



Poison and Carbolic Acid, 573. 

 Sneller, Mr., 65. 

 Soap, Improving, 3S5. 



Liquid, for Wool, 476. 



Metallic, 478. 



Kasan, 302. 



Yellow Color for, 517. 

 Society of Physics and Natural History of 

 Geneva, 597. . 



Soda, Nitrate of, on Plants, 323. 



Permanganate of, 366. 



Tungstate of, 433. 

 Sodium for purifying Iron, 62. 

 Soils, Productive Power of, discussed by 



Voelcker, 32S. 

 Solar Eclipse, December, 1S70, 3. 



Protuberances, Respighi, 6. 

 Solutions, Aqueous, for growing Plants, 



29S. 

 Solvent for Sulphur, Aqueous, etc., 68. 

 Sombrerite, 326. 

 Somnambulism, Cure of, 555. 

 Sonoran Province, 152. 

 Sorby, Mr., 294, 307. 

 Soup Tablets, 360. 

 South Africa, Explorations in, 130. 



Carolina, Phosphate Beds of, 87. 

 Sparrows, Transportation of, 256. 

 Speckled Fabrics, 446. 

 Spectroscope for testing the Purity of Wa- 

 ter, 46. 

 Spectrum Analysis of Blood, 45. 

 Spence, Mr. Peter, 394. 

 Sperm Candle, Novel, 510. 

 Spiller, Mr., 481. 



Spinal Marrow and Brain, Ratio of, 164. 

 Sponge Paper, 551. 

 Spots of Grease, Removal of, 378. 



and Stains, Removal from Clothing, 

 377. 

 Sprague, Mr., 604. 



Stains from Walnuts, Removal of, 379. 

 Star, Parallax of, 10. 

 Starch, Rice, 442. 



Water-proof, 47S. 

 Steam and Gunpowder, 416. 



Boilers, Jacket for, 398. 

 Boilers, removing Deposits from, 

 398. 



in nerring Fisheries, 34S. 

 Packing, Girdwood's, 41S. 

 Steamer for Fishing, 606. 

 Steatornis Caripensis, 46G. 

 Steel, Bernard Process, 63. 



Bessemer, 63. 



Burned, Restoring, 390. 



Determination of its Carbon, 66. 



Heaton,63. 



Heaton and Bessemer Process, 390. 



Making, Parkes's Improvemeut,392. 



Siemens's, 390. 



Type, 494. 

 Steering Gear, 418. 

 Stehverger, Dr., 558. 

 Steindachner, Dr., 105. 

 Stein, Prof., 429. 

 Sterlet, 213. 



Stimpson, Dr., 224, 276, 277, 608, 609. 

 St. Kilda Island, 191. 

 St. Lawrence, Exploration of the, 139. 

 Stockings with double Thread, 426. 

 Stohmahn, Mr., 344. 

 Stolba, Prof.,57, 59, 474. 

 Stone, Blackening, 410. 



Coal, Heat from, 49. 



and Copper Salts, 410. 



Mr., 7. 



Mr. Livingstone, 21C. 



.Victoria, 405, 407. 

 Storm Signals, 32. 



in the Azores, 34. 

 Stove, Gas Cooking, 372. 

 Strange, Col., 602. 



