INDEX, 403 
Deflagrator, improved forms of the, 99 
Deluge, Universal, the proofs of a, 150, 317 
Dewey, Prof. his geological sketch of Massachusetts, &c. 1 
—— additional remarks, 240 
— Caricography continued, 93, 264 
Dobereiner, on the Capillary action of Fissures, 377 
Ductility of Glass, 392 
Durand, Mr. his Engraving, 72 
Dwight, President, on the West and North West Winds of ene 
England, 307 
Eaton, Prof. his geological Survey, 195, 358 
on the changes in Geology, proposed by Phillips 
and Conybeare, 261 
Easton, Penn. Geology and Mineralogy of, 236 
Editor, his remarks on Prof. Vanuxem’s paper, 147 
onthe formation of Crystals in Geodes, 282 
Education, Mr. Maclure’s remarks on improvements in, 188 
Electric Light, 380 
Electrical Machines, Plate, 378 
Electricities, the two distinguished, 373 
Electricity on separation of parts, 379 
Animal, 391 
Electro- Magnetic, and Galvanic Experiments, by Prof. Hare, 145 
Electrometer, Prof. Hare’s Single Leaf, 99 
Emmons, E. on granitic veins and beds, 250: 
Emperor of Russia, 371 
Equinoxes, Precession of the, 132, 139 
Experiments, Electro-Magnetic and Galvanic, by Prof. Hare, 145 
Fayette, the Marquis, his letter to Col. Trumbull, 173 
Ferrara ‘* Storia Naturale della Sicilia,’ 201. 
Field, Martin, his localities of Chry soprase and Pimelite, 234 
Meteorological Notice, 306 
Finch, John, his Geology of Easton; Penn. 235 
on the Forts around Boston, 338 
Fires, Natural, 55, 88 
Fish, Hatching of, 381 
-Preservation of by Sugar, 391 
Fisher, Prof. Remarks on his paper on the maxima and minima 
of functions, 133 
Foot, Dr. Lyman, on acid fumigations, 200 
Forts around Boston, 338 
Franconia Iron Works, 180 
Friction, The heat produced by, 276 
Fumigations, acid, 200 
