S90 



ANNUAL OF SCIENTIFIC DISCOVERY. 



179 



96 



349 



259 



41 



34 



Qualities, different, of potatoes, to sep- 

 arate, 161 



duality of indigo, test of, 177 



Quantity of phosphoric acid in soils, to 

 deteri'iine, 



Queensware, American, 



Quetelet, M., 



Quicksilver in California, 



Railway chairs and switches, improved, 

 " Russian, 



Railways, magnetic action on, 



Rain, black, in Ireland, 



Rain, production of lightning by, 



Rankin, Rev. Mr., 



Rare minerals, occurrence of, in the 

 United States, 



lUwson, Mr. R., 



Rehmann, Rev. Mr., 



Recent chemical discoveries, 



Redfield, Prof., 



Rediscovered, ancient art, 



Relations, magnetic, of the optic axes of 

 crystals, 



Remains, fossil, disco very of, in the Con- 

 necticut valley, 

 " mammalian, in New York, 



Report on light-houses in the United 

 States, 



Reports, scientific, 



Reptile, huge fossil, discovery of, 



Researches on electro-physiology, 



Resources of Russia, 



Restore decayed ivory, to, 



Reymond, Du Boys, 



Rhinoceros, fossil, of Siberia, 



Rhode Island, coal in, 



Ribbon-fish, 



Richness, saccharine, of the sugar-cane, 



Ridgway, Prof., 



Ridley, W., 



Riess, M., 



Rifle, new, 



Rinman, R., 



Riofrey, Dr., 



Rise and fall of the waters of the North- 

 ern lakes, 



River, new, in California, 



" terraces of the Connecticut val- 

 ley, 



Rivers, fall of, 



Roads, common, steam-carriages on, 



Robin, Dr. Charles, 



Rocks, decomposition of, 



Rogers, Prof. H. D., 

 " Prof. W., 



Rome, new statue discovered at, 



Rope, Kyanized, 



Rose, the, 



Rotary, new, engine, 



Russia, ice-cave in, 

 " resources of, 



Russian railway, 



Rye in a wild state, 



Saccharine richness of the sugar-cane, 



Safety-fuse for boilers, 

 " switch, Tyler's, 



Salter, M. S., 



Salt in New York, 



Salt, pillar of, 



Bait-water, distillation of. 



348 

 118 

 134 



273 

 154 

 358 

 162 



287 

 163 



131 



282 

 287 



71 

 367 

 288 

 116 

 265 



95 

 114 

 86 

 271 

 310 

 305 

 279 

 266 

 112 



46 

 207 

 333 



245 

 359 



229 

 246 

 37 

 302 

 236 

 225 

 254 

 365 

 78 

 292 

 27 

 249 

 265 

 34 

 300 

 305 

 25 

 40 

 85 

 93 

 237 

 99 



Sandstone, old red, footprints in, 2R1 



Satellite of Neptune, observations on, 350 



Scandinavia, fossil bovine animals of, 283 



Schoolcraft, Mr., 361 

 Science, American Association for the 



promotion of, 367 



Scientific report?, 387 



Scinde, geology of, 238 



Screw-pile, 72 



Sea, Dead, 236 



" buoyancy of the water of, 161 



Sea-cow, 313 



Sea-water, carbonate of lime in, 201 



Second comet of 1849, 343 

 Secondary variations of the magnetic 



needle, 137 



Seed, cotton, extractor, 60 



Self-deterininins variation-compass, 44 



Self-registering magnetic needle, 134 



Senarmont, M. de, 212 



Separators, grain, improvement in, 60 



Sewing machine, 50 



Sexes in the oyster, 324 

 Sheet-iron pipes, 



Shipping-signal, new, 69 

 Ship's velocity, instrument for measur- 

 ing, 69 

 Shoals of Nan tucket, 353 

 " " animal life on, 314 

 Shooting-stars observed in 1849, 334 

 Shot, new mode of manufacturing, 48 

 Siberia, fossil rhinoceros of, 286 

 Siberia, gold mines of, 257 

 Sierra-Morena, draining the mines of, 252 

 Signal, new shipping, f>9 

 Silkworms, diseases of, 329 

 Silliman, Prof., ]!)6 

 Silliman, Prof. B., Jr., 183, 292 

 Silver, German, 92 

 Silvering glass, improvements in, 206 

 mirrors, application of gun- 

 cotton to, 207 

 Simpson, Lieut., 360 

 Prof., 166 

 Singular combination of nitrogen, 221 

 Skeletons of wild animals, 287 

 Smee, Alfred, 115 

 Smell of musk destroyed by ergot of rye, 21 1 

 Smelting iron, new method of, 85 

 Smith, Dr. J. Lawrence, 265 

 " Dr. Junius, 303 

 " F. H., 50 

 " Henry, 42 

 Smoky chimneys, prevention of, 63 

 Snow line in the Himalaya, 250 

 Snowy mountain in Eastern Africa, 35rt 

 Soap on teeth, 



Soda, carbonate of, and hread, 183 

 " manufacture of, 209 

 " sulphate of, new mode of manu- 

 facturing, 210 

 Sodom, apple of" 294 

 Soils, to determine the quantity of phos- 

 phoric acid in, 179 

 Solar system, connection of comets with, 343 

 Soldering cast-iron with wrought, meth- 

 od of, 89 

 Sonometer, the, 65 

 Soubeiran, M., 175 

 Species, new, of manna, -93 



