Review of Recent Geological Literature 125 
The latest geological event seems to have been the rise of the land 
to its present attitude, accompanied perhaps by volcanic activity in 
some of the peaks of the region. 
The book is a very useful compend. It would have been im- 
proved by an index and still more by an outline map of Oregon. 
On the map could have been expressed various localities which the 
unfamiliar reader would have referred to eagerly, and it might also 
have shown some geological data. N. H. W. 
Ice or Water: Another Appeal to Induction from the Scholastic 
Methods of Modern Geology. By Sir Henry H. Howorth. Id 
two volumes. Vol. I, pp. liii, 536; Vol. II, pp. viii, 498. Long- 
mans, Green and Co., London, New York, and Bombay, 1905. 
In these controversial volumes, published a few months ago, 
Sir Henry Howorth returns with redoubled zeal to his warfare 
against the glacialists. All extant or even obsolete theories of the 
causes of the Ice age are reviewed and analyzed. Weighed in the 
author's balance, they all are found wanting; none seems to him 
accordant with sound physical principles, and competent to explain 
continental glaciation. Therefore, in his judgment, the Ice age, in 
which the glacialists believe, must be a myth, merely a figment of 
their imagination. 
To follow this destructive criticism, however, a constructive 
third volume is promised, completing the series thus entitled, which 
last volume will be devoted to exposition of the author's theory of 
the origin of the drift by the agency of rushing waters or floods, the 
renowned debacles of geologic science two or three generations ago. 
From his early studies and publications, "A History of the 
Mongols," and "Chingiz Khan and his Ancestors," which led our 
author through central and northern Asia, he first came forward 
to challenge glacial doctrines in a memoir most amply illustrated 
by Siberia. This was "The Mammoth and the Flood, an Attempt 
to Confront the Theory of Uniformity with the Facts of Recent 
Geology" (pages xxxii, 464; London, 1887). 
Six years later, he again assaulted these doctrines of glaciation r 
imputing them to wild imagination, such as gives affrighting dreams, 
in "The Glacial Nightmare and the Flood, a Second Appeal to Com- 
mon Sense from the Extravagance of Some Recent Geology" (two 
volumes, pp. xxviii, 376, and xi, 377-920; London, 1893). In a con- 
siderable degree the new volumes cover the same ground and use 
the same arguments as that former work; but the present discus- 
sions and adverse criticism are more elaborate, with large polemic 
additions, brushing aside and toppling down, according to the 
author's opinion, all the ingenious devices by which the followers 
of Agassiz have sought to account for the climatic conditions of 
their Glacial period. 
In opposition to the epeirogenic theory, which seems to the 
reviewer to be true and sufficient to explain the accumulation of 
