426 



ANNUAL OF SCIENTIFIC DISCOVERY. 



SCORESBY, DR., 169 



Sea, comet discovered at, in 1849, 367 



" phosphorescence of, 334 

 " steamers built in the United States 



in 1850, 12 

 Sea-coast of the United States, change 



of level in, 251 



Sea-water, apparatus for filtering, 63 



corrosive action of, on copper, 224 



metals in, 177 



presence of fluorine in, 188 



Sea-weed, method of obtaining iodine 



from, on a large scale, 133 

 SEARS, MR., 44 

 Secret of the embalming process, 209 

 Secretion of milk, 354 

 Sectional boats, 50 

 Self-registering tide-gauge, 61 

 Sensation of light, 137 

 Senses in the Annelides, 319 

 Sept. 30, meteor of, 369 

 Serpent of the Bible, 346 

 SERRES, M., 272 

 SESTINI, PROF., 374 

 SEVVALL, WILLIAM, JR., n 

 Sewing-machine, 40 

 Sheathing for ships, corrosion of a cop- 

 per alloy of silver used for, 226 

 Shells, distribution of, as regards size, 330 

 weight of, 330 

 SIIEPARD, MR., 66 

 PROP., 286 

 Ship-building, iron as a material for, 94 

 Shoes for horses, noiseless, 23 

 Shot and shells, effect of, on iron ves- 

 sels, 94 

 " experiments with, 165 

 SIEMENS, C. W., 8 

 Siemens's telegraphic apparatus, 120 

 Silicates, new method of decomposing, 236 

 SILLIMAN, PROF. B., JR., 258 

 Silurian formation in Bohemia, 259 

 Silver, discoloration of, by boiled eggs, 250 

 " in metallic minerals, 175 

 SKINNER, JOHN L., 73 

 Sleep, death from want of, 355 

 Sleepers, cast-iron for railways, 27 

 SMITH, ANDREW, 23 

 " ASHBEL, 80 

 " DR., 223 

 '' J. L-, 301 

 Smoke, prevention of, on railways, 27 

 Smyrna, earthquake at, 278 

 SMYTH, PROF. PIAZZI, 53 

 SNEAD, CHARLES S., 38 

 SNELL, PROF., 146 

 SNOW, DR., 216 

 Soap-plant, California, 323 

 Soils, action of, on the constituents of 



manures, 203 

 Solar and stellar Daguerreotypes, 148 

 ray, influence of, on oxygen, 249 

 spectrum, 136 

 Solid eye-piece, new, 145 

 Solutions, antiseptic, saturation of grow- 

 ing wood with, 230 

 SORBY, H. C., 172 

 " J. C., 315 

 SOUBEIRAN, M., 202 

 Sounding-line, new, 50 



Soundings, deep, mode of making, 264 

 Sources of the Nile, 336 



SOYER, M., 



Spark, electric, intensity of, 123 



" secondary, extraordinary size 



and length of, 128 



Species, new, of American Medusa, 332 



new, of sugar, 187 



Spectacles, polarizing, 145 



Spectrum, solar, 136 



Spheroidal state of bodies, 241, 244 



state of water applied to 



machinery, 10 



structures in sedimentary 



rocks, origin of, 258 



Spinal marrow, preservation of life af- 

 ter the loss of a portion of, 359 

 Spleen, theory of, 349 

 Spool-cotton, American, 41 

 Spots on Jupiter, 366 

 SPRECKLEY, G. S., 377 

 Spring, air, for doors and gates, 64 

 Spring-governor, 377 

 Springs, Lower Blue Lick, of Kentucky, 229 

 SQ.UIER, E. G., 280, 357 

 Stammering, cure for, 363 

 Star, new, 374, 377 

 Starch, improvements in the manufac- 

 ture of, 75 

 Stars, colors of, 374 

 " occultations of, in 1S50, 373 

 State, spheroidal, of bodies, 241, 244 

 Steam, new mode of applying, to the 



propulsion of vessels, 12 



Steam-boilers, means of preventing the 



corrosion of, 11 



Steam-engine, double piston, 5 



Steam-engines, apparatus for stopping, 6 

 " incrustations in the 



boilers of, 226 



Steamers built in the United States in 



1850, 12 



Steam-plough, 



Steel, improved method of producing, 91 

 " manufacture of, 92 



Steering apparatus, new, 43 



STEIN, M., 212 



Stems of vegetables, exudation of ice 



from, 157 



Stereoscope, chromatic, 145 



Stereotyping, new mode of, 71 



STEVENS, MR., 67 



STEWART, J. R., 4 



Stirrup-iron, new, 29 



STOLLE, DR., 79 



Stone, durability of, 239 



Stone-ware pipes, improvements in, 55 

 Stove, gas, 53 



" Soyer's magic, 52 



Street locomotive, engine for, 15 



STROVE, M., 254, 375 



Submarine telegraph between England 



and France, 121 



Subsidence caused by drainage, 252 



of Newfoundland, 253 



Substitute for quinine, 219 



Sugar, beet-root, manufacture of, in Eu- 

 rope, 



" cane, new variety of, 319 



" machine for purifying, 45 



