INDEX. 



4DI 



.Mercury, congelation of, 192 , 



. , method of discovering small quantities of, 392 



Metallic castings, improvement of, 190 

 Meteor in Maine, notice of the late, 170 

 Meteorological fact, 23 

 Mica, 49 



• •, Prismatic, 30 



Mineral Spring containing Iodine, 387 



Mineralogie appliqu^e aux arts, 188 



Mississippi, velocity of, 174 



Mitchell Dr. S. L. observations on the Proteus of N. America, 



63 

 Monochromatic lamp, description of, 368 

 Monte Video, 5 



Morey S. on the Patent water-burner, 141 

 Mount Holyoke, 5 

 Muriatic acid, condensation of, 867 



N. 



Navigable Canals, Second Memoir on, 288 



Navigation Canal, 190 of rapids, 175 • 



Necrology, 200 



Nitrous gas, Theory of its action in Eudiometry, 338 



Nitrous oxide, condensation of, 355 



Numerical Faculties, Theory of, 285 



O. 



Observatory Astronomical, Berne, 374 

 Ordinaire J. method of teaching latin, 383 



Partridge W. new work on Dying, 362 



Paste, 379 



Percival J. G. analysis of Brongniart sur les vegetaux fossiIes,l78 



Perkins J. description of his new Steam-engine, 111 



• . application of his new principles to engines of the 



old construction, 116 



, method of applying his new invention to engines of 



the old construction, 332 



on the cutting of steel by soft iron, 390 



Petrifaction, notice of asilicious, 249 

 Phillips and Conybeare's outlines &c. review of, 203 

 Philosophical instruments, Gambey's, 374 

 Plants from Alabama, Notice of, 61 

 Plastic clay and sand formation, 34, 214, 244 

 Vol. VII.— No. 2. 51 



