418 INDEX. 



E. 



Eaton, Prof. Geological Prodromus, 63 



Remarks, 334 



Eaton galena, 196 Educational Beneficence, 394 



Electrical Focus, some effects of, 383 Electricity of Solar Rays, 391 



Electro-galvanic phenomena, 194 Encyclopaedia Americana, 413 



Europe, Northern, Geology of, 16 



F, 

 Faust, Edwin D. on the Peroxide of Hydrogen, 34 

 Ferro-siJicate of manganese in Rhode island, 142 

 Fluxions, solutions in, 69, 329 Foreign Books, 201 



Foundling Hospitals, 393 

 Fredonia, lighted by natural gas, 398 

 French eggs and apples, 193 



G. 



Galvanic Battery of Watkins, 162 Gas lights, natural ones, 398 



Gazlay, S. Rev. on the origin of Coal, 397 Gelatine, use of, 169 



Geology of Arctic Regions, 1 



sand formation of New Jersey, 274 



Geological Prodromus of Prof Eaton, 63 



formation of an island, 197 



remarks by Prof Eaton, 334 



Society, gifts to, 202 



Geometry, elements of, 416 German collections of minerals, 400 



Gold Formation of N. Carolina, 400 Gold in Maryland, 202 



Greenland, Geology of, 14 Griscom, Prof, extracts by, 161 



Gunpowder, premature explosion of in blasting rocks, 132 



H. 



Hansteen, Prof, on the magnetism of the earth, 145,392. 

 Hays, A. A. on a Portable Hygrometer, 351 



on the preparation of the Chlorate of Potash, 408 



on a test for lead in Sulphuric Acid, 195 



Heavenly bodies, resistance in space to the motion of, 389 



Heidelberg store of minerals, 401 



Hitchcock, Prof, on German collections of minerals, 400 



Hough, Horatio G. on liquid Attraction, 86 



Hudson's Bay, geology of, 11 Humboldt, expedition of, 405 



Hydrophobia, cure for, 204 Hydrostatic lamp, 161 



Hygrometer, new portable one, 351 



Iceland, geology of, 15 Idocrase, new locality of, 145 



Igneous origin of some Trap Rocks, 119 Indelible Ink, new kind, 172, 371 



Ingalis, Lieut, on a luminous appearance of the sea, 209 



Iodine, crystallization of, 168 loduret of Calcium and Potassium, 177 



Ipecacuanha branca, analysis of, 385 



Iron Mines, 203 Iron, native, crystallized, 140 



Kamschatka, geological notices of, 30 



L. 

 Lamp, Hydrostatic 161 Lead in oil of Aatriol, test for, 195 



Leech bites, 392 Leeches, death of during storms, 186 



Librai y of Useful Knowledge, 411 Library of Entertaining Knowledge, 411 



Light, chemical action of, 376 Lightning, effects of at Chailestown, 193 



Linear unit, 164 Liquid attraction, principles of, 86 



Liquid Sulphurous Acid, 166 Litmus paper, 165 



Long, Geo. W. on the origin of Springs, 336 

 Lowitz, H. Fitz, on a fusible Cement, 81 Lyceums in New England, 415 



