402 INDEX. 



Delaware, minerals of, 1 



Density of the air, opposite effects of, on clocks, 375 



Doolittle, Isaac, on crank motion, 60 



Amos, on lunar circles, 397 



E 

 Eaton, Prof., on Geological nomenclature, 145 



on Geological Strata, 359 



Eastern Seas, voyage to, by Capt. B. Hall, 206 

 Elephant, fossil tooth of, 31 



Falls, Tockoa and Tallulah, notice of, 209 

 Finch, J. on the Mineralogy of West Chester, 15 



on the boundaries of empire, 18 



on the atomic theory, 24 



Field, Martin, on the profile mountain of New Hampshire, 64 



Meteorological table, 398 



Fire, mode of preserving buildings from, 379 



Fluates, 387 



Fluoric acid, 387 



Fluxions, a theory of, 330 



Fogs, polar, 378 



Fossil bones, discovered in France, 203 



Foster, A. notice of Tockoa Falls, by, 209 



Friction, effects of, 194 



G 

 Gas, a new combustible one, 205 

 Geological nomenclature, by Prof. Eaton, 145 



specimens for sale, 190 



strata, 359 



Gold, artificial, a new alloy, 371 



Goodrich, G. E. on a peculiarity of vision^ 264 



Gymnasium, New Haven, 400 



H 



Halle university, jubilee fete at, 381 



Hansteen, Prof, on the influence of polar lights on the magnetic 

 needle, 109 



Hare, R. on Pneumatic cistern, 200 



new apparatus, 354 



Harlan, R. on bones disinterred upon the Mississippi, 186 



Hayes, Augustus R. on the combinations of chromium, 136 



Hildreth, S. P. meteorological observations by, 63 



shells found near Marietta, 276 



Hitchcock, Prof, mineral localities by, 215 



Human race, species and varieties of, 379 



Hydro pneumatic cistern of Dr. Hare, 200 



