INDEX. 401 
Mercury, cocacleaes of, 192 
———,, method of = tee small anantties a 392 
Metallic castings, improyement ef, 190 207 
eteor in Maine, notice ae the late, 170 Sif | +194g04 
ie 23 1 Hi co 
Mic “p? et) f Pe 
Wing spring oaanene Iodine, 387 a ‘4d 
‘Mineralogie appliquée en arts, 188 ‘7 
Misissipp, ve velocity of, 1 
_ Mitchel S.L. a eather te on the Proteus of N. patented, 
2 
‘on 
oP lamp, description of, 368 
Monte V 
Morey rg on ne Patent water-burner, 141 
Mount Holyoke, 5 b.caitntiedn!--—— 
Muriatic acid, condensation of, 857 44 t 
1 PE Ie Fa ae 
N, f a Pratt af a 
Navigable Canals, Second Memoir vg ed si 
Navigation Canal, 190——of rapids, wer 
ecrology, 20C ; 
Nitrous gas, pheory of i “ amen, in Ealisenct?y, 338° 
Nitrous | onden: of, 355 
Numerical Faculties, Theory of, 285 
me 
oO. 
"Ghee Astronomical, Berne, 374 
Ordinaire J. method of teaching latin, 383 
Px 
ola W. new work on Dying, 362 
P. 37 
Py reival J. G. analysis of Brongniart surles vegetaux fossiles,178 
Perkins J. description of his new Steam-engine, 111. 
——. aor: of his new principles to ——— of the 
old construction, 116 
, method of applying his new invention to engines of 
the _— construction, 332 : 
n the cutting of a es soft iron, 390 " 
Phaute from a tey Notice of, 61 
Plastic clay and sand formation, 34, 214, 244 
# Vou. VII wan O, = 51- 
