470 PROCEEDINGS OF THE NEW YOKK MEJiTING 



1727. CiilcareouH ;ilg;e in outlet of pools, sunitiiit of An^el terrace, Maiiiinoth hot 



sprin<i;s, Yellowstone National park. (555.) C. D. W., 1898. 



1728. " O.K-bow " bend, Trout creek, Hayden valley, Yellowstone National park. 



(55G.) C. D. W., 1898. 



1729. North end of Teton range, northwest of Jackson lake, Wyoming. (557.) 



C. D. W., 1898. 



1730. View of the Teton range from the east shore of Jackson lake, Wyoming. 



(558a.) C. D. W., 1898. 



1731. Basal Cambrian sandstones of section at mouth of Two-mile canyon, 2 miles 



south of Malad City, Idaho. (562a.) C D. W., 1898. 



1732. Summit of ridge. View from the north, about 3 miles south of Malad City, 



Idaho. (563.) C. D. W., 1898. 



1733. Boulders in Firehole river, Yellowstone National park. (565a.) C. D. W., 



1898. 



Size, 6 by 7^ inches. Nine photographed by H. AV. Turner 



1734. Crescent lake, in the Yosemite National park. The morainal dam w4iich has 



' formed the lake is shown, the outlet being in the middle, where the drift- 

 wood has accumulated. ^ H. W. T. 



1735. View from near Sentinel Dome, in the Yosemite National park, showing the 



canyon of Tenaya creek and the roches-moutonnees-like surface of the 

 plateau north of Yosemite valley. H. W. T. 



1736. Rock basin in biotite-granite. Ridge south of Morrison creek, in the Yo- 



semite National j^ark. The diameter of the basin is about 1 meter and 

 its depth about 15 centimeters. These- little basins are formed by atmos- 

 pheric agency without aid of running water. H. W. T. 



1737. Showing the weathering of biotite-granite on ridge south of Morrison creek, 



a branch of the Tuolumne river, in the Yosemite National park. On the 

 boulder to the left may be seen several little rock basnis which by growth 

 have coalesced. H. W. T. 



1738. Exfoliating granite east of Ro^^al Arch lake, which drains into the South 



Merced river, in the Yosemite National park. H. \V. T. 



1739. Exfoliating granite on slope northwest of Grouse lake, in the Yosemite Na- 



tional park. The different steps formed by the layers are all glaciated, 

 show'ing that the exfoliation took place before the final retreat of the ice. 

 H. W. T. 



1740. Exfoliating granite on slope northwest of Grouse lake, in the Yosemite Na- 



tional park. The large boulders in the foreground are polished on their 

 upper surface and have been fractured and moved by frost and heat into 

 their present position since the retreat of the ice. H. W. T. 



1741. Boulder of an igneous pudding-stone on ridge north of Yosemite valley. It 



is corajjosed of nodules of diorite cemented by biotite-granite. The meas- 

 ure is 25 centimeters long. H. W. T. 



1742. Granite striated and polished by the ice, near Johnson lake, in the Yosemite 



National park. H. W. T. 



