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NEW YORK STATE MUSEUM 



Smith, J. Waldo, credit due, 5; chief 



engineer, 13. 

 Smith, Merritt H., acknowledgments 



to, 6; deputy chief engineer, 13; 



department engineer, 14, 183. 

 Smith, Wilson F., acknowledgments 



to, 7; division engineer, 21, 191. 

 Snake hill, 153. 

 Solubility, question of, 138. 

 Southern aqueduct, general location 



map, 184; terminus, 215. 

 Southern aqueduct department, 183. 

 Spear, Walter E., acknowledgments 



to, 6; department engineer, 14, 215. 

 Special exploration zones, 22,7-70. 

 Spencer, J. W., cited, 90. 

 Spirifer arenosus, 41 ; figures, 41. 



concinnus, 42. 



macropleura, 42; figures, 43. 



mucronatus, 38; figures, 39. 



murchisoni, 41. 



perlamellosus, 42. 

 Sprague & Henwood, boring equip- 

 ment owned and operated by, 141. 

 Sprain brook, 203. 

 Springtown, 149, 150. 

 Sproul, A. A., acknowledgments to, 



6; division engineer, 21, 172, 175. 

 Sprout brook, 175, 177; geology, 171- 



74; geologic cross section, 173. 

 Staten Island, Cretaceous and Ter- 

 tiary strata, 32. 

 Stockbridge dolomite, 201, 212. 

 Stony Point, 177. 

 Storm King crossing, 85, 91-95, 97, 



104, 105 ; trial profile, 94. 

 Storm King gorge, 89, 92, 156. 

 Storm King granite, 52, 57, 100, 104; 



quality and condition of rock, 



106-7. 

 Storm King mountain, fault along 



the southeast face of, 163. 

 Stratigraphy, 31-57- 

 Strophalosia truncata, 38. 

 Stropheodonta becki, 42. 

 Strophonella headleyana, 42. 

 Strophostylus expansus, 41. 

 Structural features, 58-62. 

 Styliolina fissurella, 38. 



Surface configuration, history of, 66. 



Swift, William E., acknowledgments 



to, 6; division engineer, 21, 83, 163. 



Taonurus caudagalli, 40. 



Tertiary deposits, 36-37, 54. 



Tertiary incomplete peneplanation, 

 69-70. 



Tertiary reelevation, 70-71. 



Thirlmere aqueduct of the Man- 

 chester, England, Waterworks, 138. 



Thirlmere limestone, average of five 

 analyses, 139. 



Tibbit brook valley, 203. 



Till, no. 



Tompkins Cove, 177. 



Tongore site, 1 14-16; plan and geo- 

 logic section, 114; detail of drift 

 character,' 115. 



Topographic features, 30-31. 



Tuckahoe marble, 201. 



Tuff crossing, 83. 



Uncinulus campbellanus, 42. 

 Unconformities, 58-59. 



Valhalla, 191. 



Van Ingen, cited, 44. 



Veatch, cited, 35, 36. 



Wallkill river, 69, 128. 



Wallkill valley section, 149-51 ; drift 

 conditions, 25. 



Wallkill-Newburgh district, 31. 



Wappinger limestone, 46, 56, 83, 100, 

 102, 154, 172, 176, 181, 272. 

 Wash rig, 25, 81. 



Water, increase in consumption, 9; 

 reports on available sources of 

 supply, 10. See also Catskill sup- 

 ply. 



Water Supply Board, staff, acknowl- 

 edgments to, 7; members, 13; de- 

 partments, 13-14- 



Wegman, cited, 209. 



West Hurley, 77, 78. 



