752 



GEKEKAL INDEX. 



[Nov. 1894, 



South Down (Devon), mica-diorite of, 

 350; granite-outcrop, 350. 



South Joggins (Nova Scotia), Coal- 

 measure shells from, 437 & pi. xx. 



Special General Meeting, Proc. 1 50. 



Specific gravities as a test of relative 

 basicity of gabbro, 321. 



Spencer, J., obituary, Proc. 51. 



Spermophilus, 194. 



Spheroidal structure in rocks at 

 Grange Mill, 634. 



Spherulites in Skye granophyre, 220, 

 221. 



Spherulitic and perlitic structures, 

 sequence of, 10. 



Spiroplecta annectens, 700 ; S. bifor- 

 mia, 700. 



Sponge spicules, in Bargate Stone, 

 680, 683. 



St. Lucia Bay (S.E. Africa) section to 

 Mont-aux-Sources, Drakensberg, 

 pi. xxii ; anthracite at, 553. 



St. Martha's Chapel (Chilworth), 

 Bargate Beds near, 681. 



Staden Low (Derbyshire), 620. 



Strahan, A., Wollaston Fund award to, 

 Proc. 34. 



Striated stones in Permian breccias, 

 466 ; rocks on Mount Kenya, 520. 



Stromboli, quartz-enclosures in lava 

 of, Proc. 2. 



Stur, D., obituary, Proc. 55. 



Surface metamorphism in S. Aus- 

 tralia, Proc. 7. 



Sus scrofa, 200. 



Susa (Italy), 245. 



Swain, E., presentation of R. Owen's 

 portrait, Proc. 142. 



Table Mountain Sandstone in S.E. 



Africa, 555. 

 Taboleiros (Matto Grosso), sandstone 



of the, 98. 

 Taddington Field (Derbyshire), 610. 

 Talpa europrea, 192. 

 Tan-y-graig (Radnorshire), section 



south of, 572. 

 Tapirapuam Hills (Brazil), section to 



Cuyaba, 89. 

 Tardree (Antrim), rhyolite of, 367, 



368. 

 Teall, J. J. H., & Sir A. Geikie, on 



Banded Structure of Tertiary Gab- 



bros in Skye, 645 & pis. xxvi.-xxviii. 

 Teffont Evias (Wilts), sections near, 



described, 53, 55. 

 Terrace, the, E. of Drakensberg (S. 



Africa), 549. 

 Terraces in Thames Yalley, 448 ct seqq. 

 Tertiary volcanic series of Inner He- 

 brides, relations of basic & acid 



rocks, 212 & pis. xiii.-xiv. ; Tertiary 

 gabbros in Skye, banded structure 

 of, 645 &pls. xxvi.-xxviii. 

 Textularia agglutinans, 699 ; T. gra- 

 men, 698; T.minuta, 698; T. praj- 

 longa, 698; T. sagittula, 698; T. 

 trochus, 699 ; T. turris, 699. 

 Thames Valley Beds, relation to 

 Boulder Clay, 448 et seqq. ; Pleisto- 

 cene deposits in Thames Valley at 

 Twickenham, 453. 

 Thompson, B., on Landscape Marble, 



393. 

 Thrust-planes in the N.W. Highlands, 



Proc. 90. 

 Tissington (Derbyshire), 610. 

 Titaniferous iron-oxides concentrated 

 in highly basic rocks, 318, 323, 324. 

 Toadstone, derivation of term, 604. 

 Torridon Sandstone, Proc. 94. 

 Trachytes of Sourton Tors, 345. 

 1 Trap-amygdaloids ' in S. Africa, 551. 

 Triarthrus Beckii, with antenna, 425, 



426. 

 Trias (?) in Matto Grosso, 97. 

 Trilobites, systematic position of the, 

 411 ; formation of head-shield, 413, 

 417 ; bending-round of 1st cephalic 

 segment, 416 ; eyes in, 420 ; dorsal 

 organ in, 422 ; anus in, 424 ; limbs 

 of, 424 ; classification, 430. 

 Tritaxia tricarinata, 699. 

 Trochammina squamata, var. limbata 



nov., 697 & pi. xxxiv. 

 Tropidonotus natrix, 190. 

 Truncatulina falcata, 721 & pi. xxxiv ; 

 T. Haidingerii, 722; T. lobatula, 

 721 ; T. variabilis, 721 ; T. Wuel- 

 lerstorfi, 722. 

 Tufa deposits in S. Africa, 564. 

 Tuffs, volcanic, of Sourton Tors, 340 ; 

 of Meldon, 347 ; of West Okement 

 River, 349, 351 ; 'corduroy' struc- 

 ture in, 351 ; Carboniferous, of 

 Derbyshire, microscopical struc- 

 ture, 603 &pls. xxiv.-xxv. 

 Turnford boring, 508. 

 Twickenham (Middlesex), Pleistocene 

 deposits at, 453; sections, 455, 456. 

 Tyndall, J., obituary, Proc. 41. 



Unconformity, alleged, E. of Llyn 



Padarn, 588 ; section, 592. 

 Underground-ice formation, origin of, 



485. 

 Upminster (Essex), sections seen on 



railway to Romford, 443. 

 Ursus arctos (?), 201 & pi. xii. 

 Urucum (Brazil), crystalline rocks at, 



88 ; iron & manganese ores at, 99. 



