NOTES. 407 
Robinson, Dr. S. ‘Catalogue of American Minerals,” 200 
localities of Minerals, 230 — 
Rock Crystal, the Formation of, 287 _ 
Rock Formations, Mr. Maclure on, 187 
Rogers, Dr. G. A. on Pot and Pearl Ashes, 304 
Royal Encouragement, 371 
Sahlite, 88 
Salisbury, Geology and Mineralogy of, 259 
Sand, Blowing, 392 
Saw, ‘acceleration of the, in the night, 393 
Scapolite, 233 
School of Rural Economy, 183 
Schweinitz, Plants of Easton, Penn. 267 
Sexes, proportion of the, 376 
Seybert, H. Analysis of the Chrysoberyls, 105 
————-— ofan Hydrate of Iron, 298 
——_——- of the Melanite, 300 
Shepard, C. W. localities of Minerals, 235 
Sibley, Dr. J. letter to the Editor, 221 
Sicily, Geology and Mineralogy of, 201 
Signs, the language of, 348 
Silk Worm, 39: 
Sillimanite, a new Mineral, 115, 195 
Sodium aud Potassium, preparation of, 372 
Society, American Geological, 392 
—-—— Geographical, at Paris, 384 
New-York State Horticultural, 398 
Spain, difficulty of mineralogical excursions in, 187 
Spinning Machine, 371 
Spodumene, Localities of, 118, 243 
Stalactical Iron Ore, 260 
Stone, single blocks of, 375 
** Storia Naturale della Sicilia,” by Ferrara, 201 
Sulphur, piercing of hot iron by, 182 
of Sicily, 210 
effects of an excessive use of, 394 
Swainson’s ‘* Naturalist’s Guide,” 183 
Taylor, Steuben, localities of Minerals, 225 
‘Temperature, effect of. on the moving power of Water, 393 
Thermometer, Prof. Adams on the construction of, 121 
‘Vorrelite, a new Mineral, 192 
Torrey’s Flora, 192 
Trap Tuff, 244 
Trumbull, Col, Picture of the Declaration of Independence, 168 
