74 



XEVV YORK STATE MUSEUM 



Fawn lake, drainage, 63 

 Feldspar,- '/2 



Fiddler's lake, fault, 51 ; syenite, 20 



•Finch mountain, fault, 55; syenite, 19 



Fish mountain, fault. 55 ; Grenville 



series, 12; syenite. 15 

 Fish-Oxbow mountain fault, 50 

 Foliation. 2)2. 



Gabbro, 8. 28-30: examples of. 31 



Oilman lake fault. 49, 50 



Gilmantown. 7 ; fault. 50 



Glacial boulders. 65 



Olacial lakes, extinct, 67-69 



Olaciology-. 9. 63-71 



Glossina trentonis. 41 



Gneiss. Grenville series, 9-13 ; mixed. 



Gorge of West Branch of Sacandaga 

 river, 70; diabase, 31; fault, 51; 

 gabbro mass. 29; syenite, 20 



Granite. 23-26 



Granite and syenite porphyries. 25 



Granitic syenite, 20 



Grant-Woods lake fault, 54 



Grenville marble quarries. 71 



Grenville series, 9. 13. 54 



Oroff-Little Cathead mountain ridge 

 fault, 56 



Groff mountain, fault, 48; syenite 

 porphyry. 26 



Guideboard hill, diabase. 30; Gren- 

 ville series. 12 



Hamilton lake, 70; fault, 51 

 Hamilton lake stream granite, 24 

 Hamilton mountain. 8, 21, 47 

 Hatch brook fault. 48 

 Hatchery brook fault, 50 

 Helldevil dam fault, 53 

 Hill, B. F., cited, 9, ZZ 

 Hope, 8; outlier near. 41-43, 56; out- 

 lier faults, 48 

 Hope lake, (^ 

 Hormotoma cf. gracilis. 39 



Ice deposits. 6'S-(:^ 



Ice movement and erosion, 63-65 



Illaenus sp., 39 



Indian Head mountain fault. 55. 56 



Isotelus. 39 



Jackson seat syenite, 15 

 Jimmy creek fault, 49, 52 

 Johnson Vly lake, 70 



Karnes, 66 



Kemp. J. F., cited, 9, Z2, iz, 34, 38, 39 

 Kennyetto creek drainage, 61, 63 

 Kunjamuk valley fault, 51 



Lake Pleasant (village), 7; Grenville 

 series, 12 



Lake Pleasant, 69; fault, 50, 51 



Lake Pleasant region, white gneiss. 

 II 



Lakes, existing. 69-70 ; extinct glacial 

 lakes, 67-69 



Lattice drainage, 63 



" Laurentian " granite, 11 



Leperditia fabulites. 39 



Leray member of the Lowville lime- 

 stone, Z7 



Limestone, 11 



Lingula curta, 41 



Liospira cf. lenticularis. 39 



Little Cathead mountain mixed 

 gneiss, 27 



Little Falls dolomite, zZ^ 35-36. 41, 



42, 44. 58, 12 



Lookout mountain, Grenville series. 



12 

 Loomis pond, 70; Grenville series, to 

 Lowville limestone, ZZ^ Z7' 38. 72 



Meco lake. 54; mixed gneiss. 27; 



syenite, 20 

 Mesozoic history, 59 

 Mica, 72 



Miller. W. J., cited, 9 

 Moose creek fault. 52, 53 

 Moose mountain fault, 53; mixed 



gneiss, 2" 

 Moose-North Branch mountain mass, 



8; fault, s^ 

 Mount Dunham, ^ault, 55 ; fault at 



west base of, 50; mixed gneiss, 27; 



syenite, 15 

 Mount Francisco syenite. 22 

 Mt Orrey. 47 

 Mount Orrey-Dunham ridge fault, 



55 



