REVIEWS 651 
ice upon bowlders, and of its methods of behavior in passing over 
projecting knobs of rock. He also gives an instructive diagram of 
the method of discharge of the ice foot where it protrudes into the 
water. Professor Barton believes that the ice ‘once extended over 
all this portion of Greenland, passing out beyond the farthest limits 
of the present coast line into the open waters of Baffin’s Bay.” He 
is not altogether fortunate in his suggestions with reference to Dal- 
rymple Rock, a figure of which he introduces for comparison, with the 
suggestion that it “presents a marked stoss and lee side, apparently 
in their appropriate positions as related to the mainland topography 
seen in the distance.’”’ The apparent stoss side faces Baffin’s Bay and 
not the inland ice. There is a radical difference between Dalrymple 
Rock and the peaks of Ikerasak and of Umanak Island, with which it 
is put in comparison, in the fact that the pedestals of the two latter 
are distinctly glaciated, showing that they have been typical nunataks, 
while the base of Dalrymple Rock shows no signs of glaciation and 
belongs in an entirely different category. 
The paper is admirably illustrated with half tone photographs. 
ex C. 
Seventeenth Annual Report of the United States Geological Survey 
Eat 1) Director's Report and other papers; Part II, Eco- 
nomic Geology and Hydrography; Part III, Mineral 
Resources of the United States. CHARLES D. WaALCcoTT, 
Director, Washington, D. C., 1896. 
This volumnious report embracing three thousand pages of matter 
which has just come to hand can only be briefly noticed here. It is 
hoped that special reviews of its important papers may be given here- 
after. The report opens with the usual statement of the operations of 
the survey by the Director. It includes the work done in the years 
1895-6 by the nearly forty parties in geology and paleontology, by 
the divisions of chemistry and hydrography, by the statisticians, and by 
the topographic and publication branches. This is followed in Part I 
by papers on “The Magnetic Declination in the United States,” by 
Henry Gannett; ‘““A Geological Reconnaissance in Northwestern Ore- 
gon,” by J. S. Diller; ‘“ Further Contributions to the Geology of the 
Sierra Nevada,” by H.W. Turner ; “A Report on the Coal and Lignite of 
Alaska,” by W. H. Dall ; ‘“ The Uintaite (Gilsonite) Deposits of Utah,” 
