396 Recent Literature. [April 
The revisions and additions bring the work down to the present 
date. In dynamical geology, Croll’s and Thompson’s theories of 
glacier motion have been added. In the part on structural geolo- 
gy the chapter on igneous rocks has been entirely rewritten and 
greatly enlarged. Under vertebrate paleontology the author has 
failed to notice the greater number of modern additions to the 
science, and has apparently confined himself to but one source a 
information, and that not the best. He says “‘I have added the 
most important results of the investigations of King in regard : 
to the tertiary and quaternary lakes of the Rocky Mountain 1è | 
gion; and of Chamberlain, Upham and others, in regard to the — 
ice-sheet moraine. 1 have also given somewhat fully Croll’s theory 
of the climate of the glacial epoch, and Wallace’s modification ] 
the same. These changes have involved the addition of many 
new figures.” Among them is a wood-cut of the Berlin Archæop 
eryx 
which needs 
We meet with the following statement on p. 324, ¥ E 
ssiz, us pe 
livin 
iving a | 
revision at the present date. “ According to Aga 
ZITTEL’S HAND-BOOK OF PALÆONTOLOGY.'—As we etre i 
in noticing the earlier parts of this work, it is the mo me 
hensive, compact and valuable manual of the subject to a 
and has sufficiently frequent references to an fot 
fossils. This embraces the univalves or Cephaloptor we 
which the author prefers the name Glossophora. — of this iat i 
call them, this will prove one of the most useful parts O°” fod 
portant work, which we are purchasing for ee owi w 
so thoroughly well prepared and illustrated that we €^ feren 
ommend it to our readers as an indispensible book of o 
The wood-cuts are excellent. a 
| d cot 
Davis’ GractaAL Erosion?—This is a very readable ” actual 
venient summary of the opinions of geologists as p ji ould a 
effects of glaciers in remolding the earth’s surface. ~ exacts ® 
pear: that this department of geology is peculiarly ce 
‘Handbuch der Paleontologie, Herausgegeben von Kart A. zera y 
2 Abtheilung, 11 Lieferung mit 265 original-holzschnitten. Preis ™ s 
chen u. Leipzig, 1882. gvo. of he 
society of 
2Glacial Erosion, By W. M, Davis, Read before'the Boston 
ural History,etc. Boston, 1882. 8vo., pp. 37. 
