468 PROCEEDINGS OF THE NEW YORK MEETING 



1669. Head frame, Kaska William colliery, Schuylkill county, Pennsylvania. 



1070. H. D. Lacoe'H museum, Pittston, Pennsylvania. (R. I). L. and (ieorge B. 



Simpson.) 



1071. Culm bank, Turkey Run colliery, Schuylkill county, Pennsylvania. 



1672. Gap at Cumberland, Maryland. 



1673. Gap at Cumberland, Maryland. 



1674. Lovi'er Helderberg limestone, near Mount Savage Junction, Maryland. 



1675. Lower Helderberg limestone, near Mount Savage Junction, Maryland. 



1676. Old marble quarry. Marble Hall, Montgomery county, Pennsylvania. 



1677. Cut on Philadelphia and Reading railroad, near Reading, Potsdam quartzite 



(Neversink mountain). 



1678. Cut through limestone, Schuylkill Valley railroad, below Norristown. 



1679. Cut through limestone, Schuylkill Valley railroad, below Norristown. 



1680. Delaware water gap. 



1681. Avondale quarry, Delaware county, Pennsylvania. 



1682. Avondale quarry, Delaware county, Pennsylvania. 



1683. Contorted gneiss, Spring Mill, Montgomery county. 



1684. Contorted gneiss. Spring Mill, Montgomery county. 



1685. Anticlinal on Schuylkill river 2 miles above Port Clinton. 



1686. Cut on Schuylkill Valley railroad showing " creep." 



1687. Potts' limestone quarry, below Norristown. 



1688. Syenitic gneiss near SjDring Mill. 



1689. Potts' limestone quarry, looking south 70 degrees west. 



1690. Potts' limestone quarry, looking south 70 degrees west. 



1691. Limestone in cuts on Schuylkill Valley railroad below Norristown. 



1692. Limestone in cuts on Schuylkill Valley railroad below Norristown. 



1693. Limestone quarrj^ Port Kennedy, Phoenix Iron Company. 



1094. Old serpentine quarry near Devon, Montgomery county, Pennsylvania. 



1695. Quartz vein in cut at Lafayette station, Montgomery county, Pennsylvania. 



1096. Vein in Cornwall iron ore mine. 



1697. Limestone in Schuylkill Vallej-^ railroad cut, near Mogeetown, Pennsylvania. 



1698. Lower Avondale quarry, Nether Providence township, Delaware county, 



Pennsylvania. View taken looking south-southwest. Report C 5, plate 

 viii. Geological Survey of Pennsylvania. 

 1099. Contorted gneiss of Wissahickon creek, near the Philadelphia and Reading 

 railroad bridge. Report C 4, plate viii, Geological Survey of Pennsylvania- 



1700. Creep striae on roofing slate, Bangor, Northampton County, Pennsylvania. 



Report Z, plate 61, Geological Survey of Pennsylvania. 



1701. Creep stri?e on roofing slate, Bangor, Northampton county, Pennsylvania. 



Report Z, plate 61, Geological Survey of Pennsylvania. 



1702. Glaciated boulder from moraine, base of Huntingdon mountain, near Jones- 



town, Columbia county, Pennsylvania. Report Z, plate 118, Geological 

 Survey of Pennsylvania. 



One hundred and six {106) vieivs presented by the United States Geological Snn'ey 

 Size, 5 by 7 inches. Thii>ty-one photographed by C. D. Walcott 



1703. Missouri River beds, above railroad bridge, near Townsend, Montana. (523.) 



C. D. W., 1898. 



