INDEX. 381 
Julien, M. his Revue Encyclopedique, 164 
Junctions of rocks near New-Haven, 283 
Kaatskill mountains described, 11 
town of, 12 
Kaaterskill, 16, 17, 18, 21 
Kaolin of New-Jersey, 368 
Kidd, Prof. 165 
L. 
Lakes, 21 
Lane, Ephraim, fluor spar, found by him, 142 
Lamp for inflammable air, 330, 382. 
Lavoisier, 284 
Lead, native American, 170 
Lee, Ezra, his submarine adventures, 94 
Leipsic fair, 341 
Letters and Journals of London and Paris, 346 
Libraries of Prussia and Germany, 340 a 
Light, means of producing, by Prof. Hare, 172 
Lightning, terrible effects of, 341 
Lignite, 351 Limestone, primitive, 211 
Lime, attempts to melt it, 288 
Liquids, boiling point of, 361 
Lithography, 341, 346, 348 
Little, George, Captain 158 
Litchfield hill, 205 
Localities of minerals, 236 
Locke, John, Dr. on river maple, 258 
Low Countries, their literature, 344 
Lupulin of the hop, 309, 311 . 
Lytta vittata, 137 
Lyceum of New-York, abstract of its proceedings, 366 
donations to 372 
M. 
Maclure, William, 231 
MacNeven, Pref. 174 
McLean, on sea serpent 151 Madrepores, 13 
Magendie, F. D. on prussic acid, 81 
Magnesia, attempts to fuse it, 290 
sulphat of, 375 
Malachite of New-Jersey, 194 
Manganese, oxid of, 374 
Manganesian oxid of zinc, aie of, 319 
Manuscripts of Herculaneum, 340 
Map, geological of England, 142 
of mountains, 168 
Maple, river, sugar manufactured from, 258 
Marble, American green, 165 
white, primitive, 211, 222 
