790 



INDEX. 



Tremolite rock, occurrence of 108-110 



TromoliUzation, AVeatiieUl marble quarry U8 



Triiissic basin, mode of formation of 373-379 



Triaasic beds, summary of history of 495-500 



Triassic eruptions, three epochs of 410-411 



Triaasic eruptives, occurrence and character of 407-501 



Triaasic (jlaciers 363-164 



Triassic fossils 394-406 



Triaasic rocks, deacription of 351-406 



general section of 354 



summary of history of 495-500 



Triaasic sandstones, thicknesses of 375 



architecturaUiSO of 391-394 



Triaasic and Glacial periods, interval between 508-517 



Tuti; occurrence of 470-481 



Tuftaceous agglomerate, occurrence of 476-481 



Turners Falls, record of ixrteaian well at 380-381 



mineral vrin at 505 



V. 



Vernon limestone, areas of 276 



Villarsite, occurrence of. 758 



W. 



Wappinj;, section at railroad cutting in 694-696 



Ware, rocks in 237-239 



diabase dikes in 414 



Ware Ki ver Lake, description of 569-573 



Warwick, great central ay ncline in 227-230 



Warwick road, sections near 215-216 



Washington gneiss, occurrence and character of. ... 20 



Washington gneiss, contact withBecket gneiss 31-32 



Washingtonile, occurrence of 131 



"Wells, artesiim. records of 380-389 



Wendell Branch syucline 217-218 



West Brook, delta of 635-637 



Westfield-Holyoke Railroad, trap filled with lime- 

 stone fragments along 456-459 



Page. 



Westfield, serpentine and marble in 92-95.113-114 



Wostfield, sections in 92-94 



AVeatfield Little Eiver, artesian well on 389 



Westfield plain, depoaita of 650-657 



Westfield River, deposits of 607-608 



Westfield marble quarrj', enatatite-aerpentine and 



limeatone complex at 147-155 



Westfield marble quarry, alteration of rocks at 147-155 



West bampton, mineral veins at 502-504 



lead mine at 503-504 



deposits of former lake in 594-595 



West Hawley, section in 173 



Whatelv, amphibolite h<Ml at 190, 192-194 



carbonaceous limestone at 191 



protrusion of Conway schist through Leyden 



argillite at 196-1 97 



mineral veins at 504 



Whetstone schist, occurrence and character of 186-187, 



220-221 

 Whitfield, R. P., titles and abstracts of paper on 



metamorphic rocks 2ri4, 256 



Whitmorea Ferry, Sunderland. anii»liibolite at 1S)0~191, 



194-195 



bornblenile-schiats at 361-362 



Wilbraham, gneiss in 42-45 



Wilbraham ayncline. <leacription of 248-249 



Wilbraham and Pelham. actinolite-quartzite of 45-47 



Williamsburg, mineral veins at 505 



deposits of glacial lake in 595 



Williams farm, map and sections of rocks at 263, 204, 26() 



Williams farm section, description of 262-271 



Worthington, araphibolite from 1 67 



Worcester, analyses of rock from 369 



Z. 



Zoisite, occurrence of 761 



Zoisite-hematite, Northfield 328 



