Accipitres,  . p wee! Bad leede eo ee ae 
Acerotheriam Nebrascensis, - 556 | Bad Axe, . . 18,47, 44, 502, 44 
Actinocrinus os - 593 | Bad River Country, . . . 431 
Adams, . 521 | Bald Point, . ; 14 
Agassi xocrinus 597 | Baptism River, . 
Age aot Lake Seperate Sandstones, 187 | Barometrical observations, 
A tural character, F. 1, - 55) Barraboo River, . - 18,520 
tuner te character, F. ed Ay 73 | Barren eae eae iar 3: 
A 571 | Basaltic beds rene ee 
Alpine pak 37 columns, " oe SSSE £18 
hy 621 Beach- . . . . 37 
i-bi-tunk’s sketch of Madeline Bedd 3 of ore SRR Oe 
. . Bel bilobatus, . . 495, 504 
ype hia undaia, 504 | Beltrami’s Pilgrimage, ee Oe 
minekan River, . . 18 | Ben ie and oe 118 
Deonaies Cheyennensis, : 578 | Ben Ne 109 
opalus, . 579 | Black ban 4 
lenticularis, ; 579 os iver, 18, 48, 151, 302, 303, 30 
Nebrascensis o-oo  « STU) Blacktwap, .-.. . 430 
Moreaue Ae 579 Blue’ Earth Bluff, Plat aC ce 
Acme Sein siywwes| eee co: | aS 
m ’ j , : * . . . . 
of +2, © he + . pf Ball Falls * . . . -) 
: . Ay « on . : ‘ ever | . . oes 
i bones, * . 604 : Fork ' . . “e . 319. 
yee - 600 | Big White Rivet, * "4 mit 
Anchithorium Bairdii,. . . 572 Beoigungk Be a ee 
aurelianense,. =. « S73) Boe Br, 2 ee se ae 
Ancient beaches, . - $96] BoiaFranc,. . . 34, 36, 483 
River- + 486) Bonne Fe ‘ aS aes ae a 
— of the Nebraska fossils, 201 | Boone County Coal, .  . 3 . 124 
oy Fok . «487 | Boundaries of Iowa Coal Field, | 99 
pecan tog * . * Ld 573 Boulders of the prairie, . . 144 
Arable land, . . . . 36 - in, . . . . . 24 
Area of lowa Coal Field, . . 98! Brachiopoda, . Oe Se 
Archimedes ! ’ . * 105 Bread root, * * . * 37 
Archwotherium, . . . * 198 Breccia, . . . * 392, 430 
Archwotherium, * * * * 539 oo. * * . * . *, 23 
Archwotheriam Mortoni, . . bo "s Portage, . ure | 
A ees . .« 572) Calymene senaria, r 495, 496 
Arid bh soe a Oe BB Copies Gia, 48 
Arctic planta, =. . BIC River, 47 
River, gies 5 4 egggr ero ed e, A 
Ashawiwisitagon, . «+ 912] Carboniferous rocks of the Des _ 
io a Moines, . . 105 
. « 80] Cardinanana, . - 2 
507, 508 River, fe BO 
. * ee . . ie 
. 507, 508 | Castilleja sessiliflora, . or aT 
co, 463 of —. de hy a oo 
. 117| Cedar Creek Sections,. .  . 115 
INDEX. 
Cenomyce rangiferina, . 37 
Cephalopoda, Pa 3 f 
eraurus pleurexanthemus, 
495, 496, 504 
Cheetetes capillaris, Pee | 
ycope’ é ‘ 504 
+ Doane Bay, . 32 
Chelonia, . ‘ 566 
ge Land District, 48 
sar, » 18, 47 
Chonetes Iowensis, 2 
granulifera, . ; ; 
pry Ge Ue i 
variolata, oY a 
Classes of rocks, é 
lay-bed of Rum River, J 33 
Clay and drift of St. Louis River, 
310, oa 
al and sands of Cass Lake, 
Clif of F rey ow — eid 
65, 66, 68 
