39& in»e;x. 



Boston Journal of Philosophy and the Arts, 359 



Brard, Mineralogie appliquee aux arts, 188 



Brewster, Dr., new fluid in the cavities of certain minerals, 186 



, description of a Monochromatic lamp, 363 



, on the connexion between the primitive forms of 



crystals, and the number of their axes of double refraction, 



363 



-, on the optical properties of the Brazilian To- 



paz, 364 



--, on the native magnesia of Shetland, 366 



Brilliant Fires, 118 



Brine Springs of New-York, chemical examination of, 345 



, results of the analysis of, 344 



Brongniart, Ad., sur les vegetaux fossiles, analysis of, 178 

 Brussels, elementary Instruction in, 382 

 Bulkley, R., furnace for ventilating sewers, 177 



Calcaire silicieuse, 38 



, ostree, 39 



Calcarious spar, 47 



, Tufa, 47 



Calligraphy, 377 



Canal de Bri^re, 313 



Canal navigation, 190 



Canals, navigable, second memoir on, 288 



Carbonic acid, condensation of, 354 



Caricography, 264 



Carlsbad waters, 285 



Castings metallic, improvement in, 190 



Celtic antiquities of America, Essay on, 149 



Chalcedony, 47 



Chilton, G., chemical examination of the Brine springs in N. 

 York, 345 — Description of an improved Rain Gage, 3?6 — - 

 Remarks on the Analysis of the Brine Springs in New-York, 

 344 



Chinese Fires, 118 



process for making sheet lead, 391 



Chiton, Description of five species of, 69 



Chlorine, condensation of, 357 



Christian morals. Society of, in Paris, 189 



Circles of memorial, 165 



Clark, E., on the navigation of rapids, 175 



Claystone, 49 



Cleaveland, Prof P., notice of the late meteor in Maine, 170 



Cleavelandite, 390 



Coal Formation, 28 



