INDEX TO VOLUME XI. 
~<a 
ACID, 1 a ante, 387 385 
Eirolites, Ww. Foiger on, 178 
——-, collection of, 183 
Erostation, 372 
___-— , E. C. Genet on, 94, 310 
\gricultures J. E. Muse o 
r, F. Mineralogy of ova , ase, 176, 227 
mphibia, specimens of, 2 
of 
ic acid, 2 
nimals, living, in solid bodie 
\nthracites = Pennsylvania, ‘Perce not 
—_—_— f Euro ope and America, 75 
\nthracite mines, Thomas Ritter on, 301 
\ntigua, minerals from, 378 
ishes, volcanic, 
\stronomical prize, 194 
Atmosphere e, luminous appearance in, 380 
f 
Al 
f 
f 
f 
f 
bet hee “ps ‘> b> b> p> 
theory, 
Balloons, ascent ot 166 
eudiometer, 40 ‘ 
ease 
taic, 195 
Beck, Lew ace on  phosphuretted hydrogen, 294 
30 
o 
Bird, Isaac, nates of a he ae 1 
Bitumen, &c. in aeonine Bo 
Blake, E. W. on cran % 
lowing machin tte =! anit, “Gaby on, 128 
fresh w 
Breislak, Scipio, death of, 192 : 
B en as Da ie fluids in ‘mineral cavities, 234 
idge, go 
Brome, a new substanc : 
Browne, P. A. puatenical Soee of Pennsylvania; 173 
VOL. XI1.—=-NO- 2. 51 
