REPORT OF COMMITTEE ON PHOTOGRAPHS 585 



The collection is already so large that its proper care and exhibition 

 on desired occasions is a somewhat serious matter, and it is felt that the 

 wants of the Society will be best subserved by selecting only such views 

 as illustrate to advantage some particular phase of geological phenomena. 



The chairman calls attention of members to the fact that it is impos- 

 sible for the committee to know in all cases what material is available, 

 and asks that those having such will communicate promptly with him, 

 and, if possible, send in their donations a month prior to the December 

 meeting. 



The committee asks a continuation of the appropriation of $15 for 

 expenses during 1900. 



Respectfully submitted. George P. Merrill, 



Chairman. 



Presented by the United States Geological Survey 



One photograph, 6 by 8 inches, by C. D. Walcott 



1879. Mouth of Fountain geyser, shortly before eruption, Yellowstone National 

 park, 1898. 



Fifteen photographs, 5x7 inches, by G. K. Gilbert 



1880 (281). Drift-strewn surface, laid bare within twenty years by the Hugh Miller 



glacier, Glacier bay, Alaska. 



1881 (333). Push moraine of Crillon glacier, Alaska, showing disturbed forest. 



1882 (356). Push moraine, made probably in 1892 by the Columbia glacier, Alaska. 



1883 (370) Section of moraine ridge on Hidden glacier, Alaska, showing protec- 



tion of ice from ablation by a veneer of drift. 



1884 (371). Freshly formed kettle hole in gravel derived from the Hidden glacier, 



Alaska. 



1885 (372). Gravel waste plain of the Hidden glacier, Alaska, showing incipient 



kettle hole. 



1886 (395). Cleavage in Yakutat shales, near Kadiak, Alaska ; more nearly vertical 



in argillaceous (darker) strata than in arenaceous (paler) strata. 



1887 (399). Drowned foreland, Kadiak, Alaska. 



1888 (470, 471). Delta in Gastineau channel at Juneau, Alaska, as seen at low tide. 



1889 (506). Dunes, Biggs, Oregon. 



1890 (507). Dunes, Biggs, Oregon. 



1891 (509). Dunes, Biggs, Oregon. 



1892 (513). Wind-made ripples on dune, Biggs, Oregon. 



1893 (514). Wind-made ripples on dune, Biggs, Oregon. 



1894 (527). Spheroidal structure in volcanic rock. One mile east of Cascade locks, 



Oregon. 



Seventeen photographs, 8 x 10 inches, by N. H. Darton 



1895 (637). Big Badlands of South Dakota, east side of Cedar draw, Washington 



county. Columns capped by sandstone, White River formation. 



