548 REVIEWS 
sedimentary fossiliferous rocks. It is less satisfactory (chiefly because 
of its brevity) in its discussion of the methods applicable to meta- 
morphic rocks, and to formations which are not indurated, and which 
contain no fossils, such as the drift and the late Tertiary and Pleisto- 
cene formations outside the drift-covered areas. Adequate directions 
for detailed work in these departments of geology would perhaps have 
carried the author beyond the limits of a volume intended primarily 
for those who are beginning practical work in geology, and for the 
intelligent reader who seeks to understand the nature of the work which 
geologists have to do and the results to which their work leads. 
The criticism might be made that at some points the book goes 
into too great detail. Here and there specifications are given which 
any student who has had even fairly adequate instruction does not need. 
If the author intended to make the book so complete that it might be 
of service even to those who have not had adequate instruction, these 
details are in place; but for young geologists who have had the teach- 
ing which most young men who enter the profession in our country 
have had, some of the simpler matters might have been omitted. 
The volume is so helpful in many ways that teachers of geology 
would do well to encourage its study by students who expect to make 
geology a special study. IX, JD), 
