398 INDEX. 



Education, Public, notice of a new work on, 161 



Electric Fluids, on the question, whether there be two or one^ 



103 



Plate machine, description of a new, 108 



Electro-magnetic apparatus, 195 

 Electro-magnetic experiments, new, 192 

 Electrometer with a single leaf, account of, 367 

 Emmons, Dr. E., localities of minerals, 254 

 Engine boilers, employment of potatoes in, 193 



, feeding of, 378 



Engine, Steam, description of Mr. Perkins' new, 111 

 , of the old construction, on the application of Mr. 



Perkins' new principles to, 116, 332 

 England and Wales, review of outlines of the Geology of, 203 

 Epicycloids, 97 



Equinoxes, Precession of the, 328 

 Etienne, St., plateau of, 312 

 Euchlorine, condensation of, 355 

 Eudiometry, Theory of the action of Nitrous Gas in, 338 



Facultes Numeriques, 285 [362 



Faraday, Mr. on the condensation of several gases into liquids, 



Feldspar Green, 261 



Fenn, Dr. H. N. localities of coal, gypsum and barytes, 56 



Ferrara, Abbe, drought in Sicily, 186 



Ferruginous Sand, 34 



Finch, J. Geological Essay on the Tertiary Formations of Amer- 

 ica, 31 



on the Celtic Antiquities of America, 149 



Introduction to Geology, 178 



Fires Chinese and Brilliant, remarks on the composition and 

 preparation of, 118 



Fire Jets, 128 



Flora of the Northern and Middle States, 178 



Flour or Meal from leguminous fruits, 189 



Fluid new, in the cavities of crystals, 186 



Fluor Spar, notice of, 54 



Foreign literature and Sciencei 188, 366 



Formic acid, artificial formation of, 1 97 



Fumigation, 188 



G 



Garnet Precious, 3 

 Gases, condensation of, 352 



