484 
tures of region, 431°; exposures, 
450°, 470’, 475°. 
Hudson river shales, 428*-30°; thick- 
ness, 429%. 
Ingham Mills section, 469°-70°. 
Kayadarosseras creek, 476°. 
Lower Silurian system of eastern 
Montgomery county by HE. R. 
Cumings, 419-68. 
Maps and sections, discussion, 467°- 
68°. 
Mariaville pond, 431°. 
Mather, W. W., on Black river lime- 
stone, 4237; on Trenton limestone, 
25°; on Utica shale, 4267; on Hud- 
son river slate group, 428°. 
Minaville section, 463°-64°. 
Mohawk river, stratigraphy of north 
side, 482°-49°; stratigraphy of 
south side, 457'-607. 
Mohawk valley, notes on stratig- 
raphy, 469-76. 
Montgomery county, Lower Silurian 
system, 419-68; topography, 430°- 
32'; stratigraphy, 482*-64+. 
Moore quarry, 474°. 
Normankill, 481°. 
North Chuctanunda creek, 430°, 434’. 
Pattersonville section, 453°-56°, 474’- 
T5*. 
Plotterkill, 450°. 
Potsdam sandstone, exposures, 477°- 
78°. 
Prosser, C. S., on thickness of Utica 
shale, 427°; Notes on stratigraphy 
of the Mohawk valley and Sara- 
toga county, 469-82. 
Pruyn quarry, 480°. 
Pulaski shales, term, 428°. 
Rock City falls section, 476°-77°. 
Rockton quarries, 4388-417. 
Rotterdam section, 4517-53°. 
Salmon river sandstones, term, 428°. 
Sandseakill, 450°. 
NEW YORK STATE MUSEUM 
Sandseakill valley, 482. 
Saratoga county, notes on the 
stratigraphy, 476-82. 
Saratoga Springs section, 477°-80°. 
Schoharie creek section, 470%-71°. 
Smock, J. C., report on quarries, 
488°, 453°. 
South Chuctanunda creek, 431°, 463°. 
Stanton quarries, 462°. 
Swartstown creek section, 472°-73°. 
Trenton limestone, 424'-26'; thick- 
ness, 425°, 466*; exposures, 482°, 
433‘, 43867, 4868, 487°, 440°, 441°, 
443", 444°, 447°, 448°, 454°, 455°, 
457°, 459°, 462°, 463+, 469%-70%, 
473*, 473°, 474*, 474°, 475°, 476%, 
480*-82*; quarries, 435°, 488°, 4467, 
453°, 456°, 459°-60", 462°, 477°, 480°; 
conclusions regarding, 466'; chart 
illustrating distribution of species, 
466°. 
Utica shales and slates, 426+28'; 
thickness, 427*, 456’, 466°, 476°; 
contact with Hudson river forma- 
tion, 428°-29, 463°-64°, 470°, 474°; 
topographic features of region, 
431'; exposures, 4457, 454°, 456%, 
457°, 463%, 470°, 471", 473%, 475%. 
Vanuxem, Lardner, on Birdseye 
limestone, 4227; on Black river 
limestone,. 423%; on Calciferous 
sandrock, 420°; on Frankfort slate, 
4287; on Hudson river shale, 428°; 
on Stanton quarries, 462°; on 
Trenton limestone, 4257; on dis- 
tinction between Utica and Hud- 
son river shales, 428°; on Utica 
shale, 426°, 4267-27°. 
Walcott, C. D., on thickness of 
Utica formation, 4277; on Utica 
formation, 429°; on Hudson river 
group, 429°-30°; on formations near 
Saratoga Springs, 477°-78". 
Weatherwax quarries, 4487. 
Wing quarry, 477°. 
