382 INDEX. 
Mastodon, bones and teeth of, 245 
Mathematics, 54, 266 
Medusz, pentacrinus Caput, 35 
Mercury, its compounds, experiments on, 350 
Mermaid, 178 
Metal, new, 363 
Meteor, gelatinous, 335 
Mica, 141—crystals of, 237 
Mica slate, 205 
Michigan lake, cinnabar on its shores, 170 
Mine hill, 226 Mink pot, 24 
Mithcill, S. L. Prof. on fish, 370 
Monson, Dr. Alfred, prepares prussic acid 
Moon, heat in rays of, 329 
Morey, Samuel, his steam engine, 101 
on heat and light, 118, 122 
on rosin bubbles, 179 
Murray, John, Dr. obituary notice of, 355 
N 
WNaptha, supposed to be ina quartz crystal, 14 
Navigation, submarine, 94 
New-Milford, 225 
New-York, and New-Jersey, min. and geol. of, parts of, 183 
New-Preston, 219 
Nitrous ether, new process for, 326 
Officers of American Geological Society, 141 
Oil from oriental Cheng, 264 
Ores of zinc, analysis of, 319 
Olmstead, Prof. D. on red sandstone, 175—on temperature, 180 
Ostrea genus, 42 
P. 
Pantopidan’s account of sea serpent, 163 
Paris supplied with hot water, 341 
Paulding, N. on shells, 371 
Peaches on an almond tree, 363 
Pentremite genus, 36 
Perkins, Thomas, 117 
Perna torta, 38 
Peirifactions of the Kaatskills, 13 
. Pictures, transparent, 348 
Pierce, James, on parts of New-York and New-Jersey, 181 
Pillars, granite rock supported on, 200 
Prisolite, 238 
Pholas ovalis, 39 
Phosphorescence of fluor spar, 142 
Plants indicators of seasons, 255 
Plate for Hare’s blowpipe, &e. explanation of, 298 
Eudiometers, &c. 317 
