LIST OF ILLUSTRATIONS. 
PALEONTOLOGY. 
ACCOMPANYING C. A. WHITEH’S REPORT. 
Facing page. 
REATES | tt —13.—hossilimolluseaj ns a25 cc oc nccelaaci= se lesnel=essio4 = Bae nbees 40 
EOFS POSSi LT OUTS Cae aa ae ee a he ah ay ee 48 
90-30.—Fossil mollusea...-- Sh AN a SHE OH pee Ug LA ITA NEY ce SER Ny RI eta 104 
PL yl BOYSHSH LUNG 08X 0) DSY CY Heyy aS A ca A eR en a 118 
Sd-GOs=—— LE OSS LM O MTS Caer e ayes eso ete a ae rea etn ms a Aran SAL Ae ea 142 
B1=—385—— FLOSSHW Tin OTIS Gene ape FUT cot a Ce AN RN sl 154 
DO 42: = OSSL MM OVNASC Bieta se et aye stare era ae ete aN calc ee Tee IMU al 172 
GEOLOGY. 
ACCOMPANYING ORESTES ST. JOHN’S REPORT. 
Facing page. 
Plate = Hobacks Canons ve slice Bie a Oe UAL IBV AL tye ee aL 181 
i Upper Valleys Hobacle hutven ees ems tees eee eee 182 
III.—Panoramic view of the Gros Ventre Range.-....-.--.-------. 187 
IV.—Geologic sections, Hoback Camion. -...--..---.-...--..------ 189 
Vie PATOL ATTIC (pve CWS io see eee aly Og Ee LILA) RNA 190 
V1I.— Panoramic views, Snake River Valley ....-........-.---.---. 191 
VII.—Geologic sections ‘through Sartrom NWS aoe i eka as Neuen bi 193 
VIII. —Panoramic BTU EN its tee ot ee SY TL LEE RS Sy Bi NR Re URS eh 196 
PX —— Geolosicyseeriones- 2... scissile einen ae ce eee es 201 
DG] RAM OKOL ETH ATU AUS eS et peat ae a a eA TARE UE LO Ute OOM 203 
XIE AO DIUNC VTS Wy ss eee NE SE NY Se ch Seon ae ALN Ty OM SR ee 204 
XII.—View and section, Green River Valley..--...----..----.----. 207 
XU ——Geolosie sections see seo sae nae tae ce els ieee eee cea eee ae 208 
XIV.—Panoramic SVE VV earn eas recep ea Ra NL BL EON UAL sa 210 
DX Vie = ad OL ATT Cheval Oya aes es a ares oN ae pel ea MNO Rs 212 
XVI.—Panoramic view, from Gros Ventre Peak ..---....-..---..--- 215 
XVII.—North flank of the Gros Ventre Range.......-.--.-------.--. 
XVIII.—Gap between Wind River and Gros Ventre Ram cese ens seen 220 
UG ACTOS WWI VEN oto ac ese eas osecosseadey sasos secousoas 223 
XX. Geolovicysectionseeecwe Masa ce cece ee eee ene een Seoee see ec aasS 227 
XXI.—Cafion Gf north forks omGreenukiver eae ee se eee ee eee 228 
XOX -— PATOL ATION Copyal Oyen sree yy tee TLL NERY A URL Se eR area 299 
XOXO: ——-Greemiysvier © Amon yes yl ey Geen ane is Nt BRAN Hae 930 
XXIV.—Morainal ridges, West Flank of Wind River Range. .-.---.-.--- 231 
XX V.—Entrance to Green River Cation ........-.....--.-.----.----- 23 
XXVI.—Geologic sections, Wind River Range....-....--..----.------ OB) 
XX VII.—West flank of Wina RiversvanoOnsssavsease escctecies seesaw 3 
XXVIIT.—Geologic sections, Wind River Range SoSGoy oodoKN ca6ous aooaso 235 
XXIX.—Geologic sections, Warm Spring Creole dunia ius Sarangi |S 236 
XXX. —Permo. Canbontferous!SecbiOlnse Heer ee ee ee 238 
XXXI.—Geologic sections, vicinity of Torrey’s Creek ......---..----.-- 239 
XXXII.—J unction of North Pork and) Wand River 222.25... cee cesee 240 
EXOXeXI —— Geolosie seCtlomats seme ec ie e eels daisies eles Sar ase Se ca 241 
BNONO NOTIN 6 —— FAT) ON UTNT Cl ave ives ay ct het a tas esac esl See ach ANAT Sci UCC ea ae 241 
PRONOXGV = FEC ATT OM eee nent ml NINO. ea He a lee i wade ee SRR ie 242 
POOR 1. —Geolocice section, hed Canon 22. loess lees. cceceuncecceenee'e 243 
XXXVII.—Dry Creek Cation, WIC W AMGSeChlOMaa-n)se eer seis sate ecenae 244 
XXX VIII.—Bull Lake Fork, view and section........---- sees cceuee seccne 245 
XXXIX,—Bull Lake Fork COP 1 TiO) § VUES aie FS TE Re ae Lh a ee ee Cs 246 
