458 
Page 
Orrrcers and Fellows of the Society, List of. 433 
OMEIGERS ELE CUIOMYOlncersctscr-c-senesocenccesa=scannees 399 
Oqinvie, Witt1AM, Presentation of verte- 
brate remains from Klondike gravel 
lO yetetsnced aoc -cosdnasodcacos SORE EE ER aH Se DCDEFooneD Bi SMe 
Onto, Clay-veins in Coal Measures of.. 38 
— oil fields, Reference t0............ 89 
--S Reference to character of. , 98 
—, Reference to mammoths of. -. 380 
Otymrrc range of Washington 
OmpHa LopuLoros, A new lepidodendroid type; 
Dawa VDT beware Sk tee pat Meese eet 329 
Onranto, Clastic Huronian rocks of. 223 
—, Nodular granite from Pine lake.. 163 
Ontanton rocks Of Canada.............cccsseeeceeeee 224 
ON THE occurrence of mammoth and mas- 
todon remains around Hudson bay; 
Rob ertsBellisctscsscccuetvecdoewecseceeepe nesters ets 369 
OrpoNez, E., Reference to, in connection 
with Mexican geology... .cc.sssccsse-e--es 20, 28 
Orpovicran fishes of Qolorado, Reference to. 89 
Ortatn of the gorge of Whirlpool rapids at 
Niagara; F. B. UNE WA OR Garereccocasccrieeeodanosd 
Oriskany sandstone of New York 28 
Ortine gravels of Washington 
Orton, Epwarp; Geological probabilities as 
to ‘petroleum 
—, Meeting called to order by 
—, Ninth Summer Meeting éalled to order 
Dyce caviar eee 
—, Reference to call on Sir William Dawson 
Daye ee Se A eee ea 432 
— — — discussion by. -- 426 
—, Response to address of weleome by........ 391 
—, Tenth Annual Meeting called to order by. 391 
—, Titles of papers by .. 12, 413 
Osars of Washington 
Osporn, H. F., Announcement of election of. 2 
— , Reference COLelectOnuO lees ses-e.ceeees tases 393 
Oscrona clays of Washingto 144 
tillof Washington... Re Gaeae caps. 143 
OstwaLp, W., cited on “chem 
WGDVONPVONAUISAIA coseoocaccoosed . ceocda . 273, 275-277 282 
—, Reference to the works of................ 
Orvawa basin, Sands and clays Of.......-......- 21 
ATOOT series cE d Clivsccesence 
MTEE, Hi. na Acknowledgments to............ 179 
Analyses of soils and clays 
—, ‘‘Clay-veins”’ in Coal Measures of...... 36, 38, 
44, 55 
—, “ Horse-hacks”’ in Coal Measures of....... 48 
— oil fields, Reference to character of......... 
3 
—, ‘“‘Sand-veins”’ in Coal Measures of.. 
—, ‘‘Slack-veins” or ‘‘soot-veins”’ in the 
Coallieasunes\Ofecccess cette cee 47 
Penrose, R. A. F., cited on rock weathering.. 258 
PerRoLeuM, Geological probabilities as to..... 85 
—, Origin Of pak ee ae eatie n no Sh 
— , Permanency of. 
— ‘supply, Duration oO : 6 
Prrroocy: Clastic Huronian rocks of west- 
ern Ont: ALL O.o22252 oe Suen sssncteaees Peceoheoere sete oerees 223 
Onta- 
—: Nodular granite from Pine lake, 
—: Syenite-porphyry dikes in the A 
dacks........ 
—: W eatherine of alnoit 3), 
PuorocrarH Committee, Report A 
PHYSIOGRAPHIC conditions in the Ottaw: 
Pirsson, L. V., x differentiation 
in Montana.. eCOdaSce Oo COBODEREEO IoONELOaNSD7B0I0000002000 253 
BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA. 
RTTOCH NG Oty WICC Olerarccecssanccetssetsteneressererrs 
PLEISTOCENE deposits of James bay. 
— epoch of Washington, Geology of 
—of Washington 
—— Canada, Vertebrate fossils from.. 
—, Relation of Puget series to.. 
—, Subsidence of Bering sea in ‘the. 
Pounmay, Jutius, cited on Niagara falls. 102 
SS SS ROWSE 105 
— — — Saint Davids ravine. . 106 
—- — Whirlpool rapids...... 67. 81 
Pottarp, C. L., Reference to work: of.. .. 344 
Porter, J. B., Announcement by. 
—, Resolution of thanks to.... 
Porter, Mrs. J. B., Reference 
—, Resolution of anual to 
Posr- Cretaceous of Mexico.... 
Posre@Lactan period, Duration of.. 
Poromac of Virginia... 
—, Relation of Greenlan at 
Pre-Camprian rocks in New York....... 
— sections in western Ontario............ 
PREGLACIAL drainage of Mohawk valley. 
— streams in Mohawk valley..... 
Proceeptnes of the Ninth Summer WV ng, 
held at Detroit, Michigan, August 10, 
1897; H. L. Fairchild, Secretar PR comes 1 
— — — Tenth Annual Meeting, held at Mon- . 
treal, Canada, December 28, 29, and 30, 
H. F. Fairchild, Secretary.............. BOL 
Reference to fossil re- 
1897 ; 
PRIBILOF ISLANDS, 
mains on 
Pucer, Lirurenant, Reference to eee 
tions by rotedonse pocie 
— formation, Age of... 
— group, Stratigraphy and structure of the. 2 
— series relation to other rock groups......... 5 
— —, Structure Of.......:0.-csessececceeeeree cael) 
— —, Thickness of.. 5 
— sound basin 113 
— —-—, Topographic features of. - 113 
— —, Drift phenomena Of........... eee 111 
Pumpe.ty, R., cited on New York basal con- 
zlomerate nepilecanan05Dn93co/8GoN00 SEDSDaCOne Boom Late 242, 
— — — porous lavas of the Keweenawan 
SCLC Stee ssrrcenesgsecescanens 
— — -— rock weathering 
Puyatup interglacial epoch of Washington. 145 
— sands of Washington...............008 Reece 146 
QuerREAU, E. C., Announcement of election 
of. 7 
—, Reference to election of.. 
—, Title of paper by. 
—; Topography and history of Jamesville 
Takei ViOTis..tccosnee-cacesesveneoee ees 173 
Reape, T. M., cited on mountain making..... 286 
— — — rock weathering 257 
Register of Detroit meeting.. 12 
—— Montreal meeting.............. 432 
Report of Committee on Photographs 418 
— — Council 392 
— — Editor. = 39! © 
— — Secretary 392, 
Sa BETSY DI RES PE eno ss ocnocoauneaseiass0005000 . 395 
Reyer, , cited on erystalline forms........ 172 
Rice, W. N., appointed member of Auditing | 
@omimintitie ese eee occa sane Sarees ee eee eee 399 
—, Reading of paper by..... . 414 
—, Reference to dise ussion of paper by. 9 
—, Report of Auditing Committee rade by. 413 
Ricu ARDSON, Sir Joun, Identification of ele- 
phant bones ONY /cees Nezdeoueconcdaessdboocomubbooscces 387 
Rink, H., Reference to discovery of 
graphite layer in Greenland by...... vet ieemee 350 
—, Reference to work in Greenland by 
