1500 (371). 
1501 (374). 
1502. 
1503, 
"1504 (378), 
LW, 
1506 (350). 
1507 (385). 
1508 (388). 
1509 (389). 
1510 (397). 
1511 (40)), 
1512 (492). 
PHOVOGRAPHES DONATED VO THE BOCTETY. 423, 
Titanotheriuin beds on Pierre shale southeast side of Indian draw. 
Shows bed of water-bearing gravel. Washington county, South 
Dakota, 
Big Bad lands, VProtoceras sandstones on Oreodon clays, head of 
Indian draw. ‘ooking northwest. Washington county, Nebraska. 
Big Vad lands, VProtoceras sandstone area, Looking southeast into 
head of Cottonwood draw. Washington county, South Dakota. 
Big Bad lands. Looking southeast into Cottonwood draw from head 
of Indian draw. rom divideon Protoceras sandstone. Washing- 
ton county, South Dakota, 
Big Bad lands. Spur of south end of Sheep mountain, Volcanic 
ash beds near top. Washington county, South Dakota. 
Big Bad lands, South end of Sheep mountain and Devils tower. Vol- 
vanic ash bed near top. Looking northeast. Washington county, 
South Dakota, 
Big Vad Jands. South end of Sheep mountain from the southeast. 
Volcanic ash bed near top. Washington county, South Dakota. 
© Protoceras” sandstone on Oreodon beds 2 miles east of mouth of 
Wounded Knee creck, Looking east. Washington county, South 
Dakota, : 
From top of Cedar point looking north-northeast. Big Vad lands. 
Washington county, South Dakota, 
Big Bad Jands. Looking west-southwest from top of Cedar point. 
Gravel cap in foreground and volcanic ash in middJe ground to the 
right. Washington county, South Dakota, 
Spring and its saline deposits from Pierre shale 10 miles northwest of 
Chadron, Dawes county, Nebraska. 
Fault in Gering formation in cut of B. and M. railway one-half mile 
north of Rutland siding, south of Crawford, Nebraska. Looking 
west. ; 
Bad lands 6 miles northeast of Chadron, Dawes county, Nebraska. 
Brule sandy clay. 
Thirteen views prescned by the U. 8. Geological Survey (G. K. Gilbert) — 
Size, 6 by 8 inches. Figures in parentheses are origina) numbers 
ls (1). 
1514 (4). 
1515 (30). 
1516 (46), 
Channel opened by Erian drainage while the ice-sheet occupied the 
Ontario basin, between Syracuse and Jamesville, New York. The 
channel is traversed by the Delaware, Lackawanna and Western 
Railroad. Looking west. : 
Channel opened by Erian drainage while the ice-sheet occupied the 
Ontario basin. Two miles southwest of Jamesville, New York. 
Channel opened by Erian drainage while the ice-sheet occupied the 
Ontario basin. Three miles east of Marcellus village, New York. 
Looking east. The upland through which the channel was eroded 
forins the skyline at the right. 
The Gulf. A channel opened by Erian drainage while the ice-sheet 
occupied the Ontario basin. Four miles west of Marcellus village, 
Looking east, 
LAU—Burw, Grow, Boe, Am,, Vou. 9, 189T 
