Bibliography. 449 
midst of arduous professional labors, and in later 
2 pr oat severe physical suffering, the author could 
‘courage enough to persevere in his works until they are 
d. Dr. Mantell has also great advantage in prosecuting 
fbetaral er since he draws with facility and success, and has a fine 
tact in developing minerals, and cepeciay ew and extricating them 
from their entanglements with foreign m ‘ is we know from 
the numerous and highly interesting ieieteos with which he has fa- 
vored us during a long series of years—sufficient to illustrate the beau- 
tiful subject of the secondary and tertiary formations of England. 
e add brief notices of the particular su jects, most al. which im- 
part a peculiar interest to the present edition. ‘The author still ad- 
heres to the nebular theory, although so many nebulz have been 
can 
The Gulf Streamsand other “ rivers in the ocean” are distinctly traced, 
: a The siliceous deposits and incrustations Rr Iceland and New 
nd are deseribed—the latter, especially, being very remarkable, 
: interesting remarks on the laws of the extincjion of ani- 
and by human a 
s of Russia and their probable adaptation to a peculiar 
& Ingenious si respecting the bones in 
pres, and the probable manner in which they were con- 
> places, pp. 181—183. ‘The ratio of shells in the dif- 
of the tertiary, and the different animals that followed 
of creation, p. 215, note. The existence or non-exist- 
; ' of flint, p. 300. —— ques- 
rof. Owen and De. Mantel, notes, pp. 436, 437, 440. 
nd Desorceies of Mr. Reginald N. Mantell in “< Ont rd 
ares idge; of the fine fossils = obtained we have re- 
and general bo pica p. 890. 
r. J. Herse p. 908. 
3 De Caadolie's Prodromus.—The long-expected eleventh vo 
of this work was published at the close of November last, or rather 
December, and is now in the hands of botanists throughout Europe and © 
