INDEX TO MUSEUM BULLETIN 21 



67 



Sand plaius, 528, 635. 



Sauds, 592; incoherent, 53^; water- 

 sorted, 599-603. 



Sandstone, see Potsdam sandstone. 



Saranac, topograi^hy, 525. 



Scapolite, 54^. 



Scotts Cobble, granite, 55i. 



Sentinel mountain, 521; altitude, 53^ ; 

 anorthosites, 58*; glacial amphithea- 

 ters, 632; gueisses, 56'^; quaternary 

 period, 628; trap dike, 589. 



Sunrise Notch, gueisses, 56^. 



Terraces, fanshaped, 599. 



Tertiary period, possible history, 621. 



Titanite, 642. 



Trap dikes, 53*, 55^; age, 618; distri- 

 bution and characteristics, 58^-591 ; 

 geologic age of, 60*. 



Utica slate, 619. 



Vesuvianite, 641. 



Walcott, C : D., acknowledgments to, 

 512. 



Water-sorted sands and gravels, 599- 

 603. 



West Brauch, see Ausable river, west 

 branch. 



Weston mine, Keene, 642. 



Whiteface lun, anorthosites, 58*. 



Whiteface, Mt, 518; altitude, 53i; 

 anorthosites, 578; glacial amphi- 

 theaters, 631; granite, 549; quater- 

 nary period, 628. 



Wilmington, anorthosites. 579. 



Wilmington Notch, 521; granite, 549; 

 trap dike, 589. 



Wilmington valley, anorthosites, 58*. 



Wilmington village, altitude, 529. 



Zircon, 558, 641. 



