AWS INDEX. 
Quadruped, Dr. Harlan on a new species of, 285 
Quinine, sulphate of, 386 
Rana, new species of, 53 
Refraction, curious lunar, 187 
Robinson, Samuel, notice of minerals, 225 
‘Rocking stones in Rhode Island, 9 
Rocks and minerals in Westfield, 213 
Royal learning, 383 
Salamander, Dr. Harlan, on a new species of, 286 
Salt, manufacture of, by evaporation, 180 
Sandstone, new or variegated, Mr. Finch on, 209 
School, free commercial, 171 
Sicily, geology of, 230 
Silliman, B. D. experiments on topaz, 352 
Singeing of cotton stuffs, 359 
Small-pox, Dr. Pascalis on, 208 
Snakes, two-headed, Dr. Mitchill on, 48 
Snow, red, 192 ~ 
Societies, literary and scientific, of the U. States, 369 
Sordawalite, a new mineral, 186 
Sounds, influence of, on the elephant and lion, 186 
-—_—_—— subterranean, 377 
Soup, method of making, 388 
Springs, brine, changes in the contents of, 193 
-—_—— origin of, 394 
Steam-engines of extraordinary dimensions, 170 
Steel, the cutting of, by soft iron, 127, 397 
Steel-plate, menstruum for biting-in on, 194 
Sulphuric acid, 360 
Surgery, 179 
"Pemperance, effects of, 398 
Temperature, natural, $7 
‘Fertiary formations on the Hudson river, 227 
Thermometrical observations by Pres. Caldwell, 294 
Thomson, Dr. his first principles of chemistry, 162 
'Fhorn fence, 167 
i ; 
Vanuxem, Rrof..L. experiments on anthracite, &c. 102 
4_>—_______.____ Prof. Hare’s strictures on the same, 111 
Volcanic eruptions, 13 
Water-spout in France, 183 
Water-wheels, the motion of, 129 
Williams, Stephen C., notice of localities, 206 
Woodhull, S., onthe heat of 1825, 296 
Yeast, method of procuring, $87 | 
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