512 REVIEWS 
readable matter at his command. The advanced student may wish 
that the book were fuller and more explicit at some points, while others 
into whose hands it will fall, will wish it more elementary. Such 
infelicities are not to be avoided, and it would have been difficult, on 
the whole, to have made a better selection of material. Important 
topics have not been omitted, and unimportant and irrelevant ones 
have not been introduced. Throughout the book the modern nomen- 
clature of rivers has been used, and on this account those who have 
not followed the progress of geographic science during the last ten 
years will find it to their advantage to read the book in course, rather 
than otherwise. 
The volume has some effective illustrations, though their number is 
too small (17 plates and 23 figures in text), which add to its otherwise 
attractive appearance. 
Professor Geikie’s volume deals with the processes involved in the 
development of topography, and with the results which these processes 
have effected. The first chapter is devoted to a general discussion of 
the agents of denudation. The principles and processes of denudation 
are then studied with immediate reference to land masses affected by 
various types of structure. The topographic forms developed in 
regions of horizontal strata at various stages in the progress of denuda- 
tion and under various conditions are first considered. The same 
principles and processes are then applied to regions where the strata 
are inclined, and the topographic results under these conditions are 
described and illustrated, as in the preceding case. Passing from the 
more simple to the more complex, the effects of denudation in regions 
of folded and highly disturbed strata are next set forth, and numerous 
cuts are introduced illustrative of the more complex topographic forms 
which result from denudation where the stratigraphy is complicated. 
The consideration of the topographic forms developed by denuda- 
tion in regions possessed of various types of stratigraphy is followed 
by a consideration of the topographic effects of faults, and of volcanic 
and other types of igneous action. Unfortunately the last of these 
topics is less adequately illustrated than most of the preceding. The 
lack of illustrations here may be less serious than it would have been 
elsewhere, since illustrations of the topographic effects of volcanic 
action are among the most common in our geographies. Nevertheless, 
the absence of abundant illustrations seems to us a defect. 
