OF THE UPPER MISSOURI. 
-t 
MINERALS AND GEOLOGICAL SPECIMENS, continued. 
379. Tufaceous, concretionary limestone, . - White river. 
380. Cream-colored marl, containing Oreodon,. do. 
Bed E. 
381. Soft white grit, do. 
382. Conglomerate, above No. 381, . 5 c do. 
383. do. with granitic pebbles, . do. 
384. Soft white sandstone, with Oreodon, do. 
385. Calcareous conglomerate, - Fort Laramie. 
386. Conglomerate, . 5 -  .. Bijoux hills. 
387. Calcareous concretions in marl, under No. 
ASGN ae aS, eee ae 8 gs aco! 
388. Sulphate baryta,foliated crystals in No. 387, do. 
389. Green silicious concretions in limestone, 
containing freshwater shells, Medicine hills. 
390. do. do. do. do. 
391. Coarse, whitish, sandstone, . Bad Land creek. 
392. Conglomerate, . 2 . Grindstone hill. 
393. Quartzose conglomerate, . do. 
394. White infusorial earth, base of bed e, local, Running water. 
395. do. do. do. Loup fork. 
397. Indurated marl, white, . Warren’s fork. 
398. Silicious tufa, . : . Niobrara river. 
399. White marl, : 6 . Loup fork. 
400. Whitish cherty limestone, : do. 
401. White foliated limestone, . 5 - Niobrara river. 
403. White tufaceous marl, containing fresh- 
water shells, . - Loup fork. 
404. Silicified wood, 0 - Running water. 
405. do. do. 
406. Silicious sinter, 0 - Sage creek. 
407. Carbonate of lime, : - Bear peak. 
408. Ferruginous conglomerate, - Yellowstone river. 
409. Micaceous granite, . : ° do. 
410. Hornblendic rock, 5 do. 
411. Limestone, with corals, . C do. 
412. do. with Spirifer, do. 
413. do. with Orthoceratite, . do. 
414, do. with Syringopora, do. 
415. Chalcedony, do. 
416. Silicified wood, . do. 
417. Limestone, with red chert, . do. 
VOL. XII1.—18 
+ 
418. Concretions from yellow marl, . . Big Sioux. 
- Black hills. 
do. 
- Powder river. 
- Mouth Big Horn. 
- Cannon-ball river. 
. Badlands ofJudith 
419. Silicious sinter from springs, 
420. Sand from sand hills, 
421. Very fine gray sand, from sand que 
422. Prismatic iron ore, . 
423. Efflorescence on soil, ° : : 
424. Compact basalt, protruded, 
425. Trachyte, . 0 : do. 
426. Bed pipe-stone, Catlinite, puiaieed by Maj. 
H. Day, U.S. A., from near source of 
Big Sioux, viz. Nicollet, p. 16, 
Upper SILURIAN. 
427. Yellowish gray silicious limestone, with 
Sey : Near South Pass 
Favosites, collected by Mr. Drexler, . { Rocky Mts. 
428. Yellowish limestone, with undetermined 
corals, . . 5 do. 
429. Chalcedony from limestone, c do. 
430. Cherty limestone, with Syringopora, do. 
431. do. with Halysites escharoides, do. 
432. do. with Streptalasma? do. 
CARBONIFEROUS AND PERMIAN. 
Near mouth of 
* | Platte river. 
. Fort Leavenworth. 
do. 
do. 
12 m. beyond Ft. 
Leavenworth on 
Ft. Riley road. 
433. Impure coal, slaty, . 
434, Compact cherty limestone, 
435. Blue cherty limestone, d 
436. Dark, argillaceous, shaly Tce 5 
438. Yellowish magnesian limestone, with Mya- 
. Deep creek, K. T. 
do. 
- Fort Riley. 
. Cottonwood creek. 
437. Impure coal, laminated, 
lina, 
439. Dark indurated ae 
440. Nodular chert, . 
441. Fine yellow clay, 
442, Yellowish gray magnesian limestone, with 
spines of Archeocidaris, : 
443. Blue cherty limestone with Monotis, . . 
444, “(Cone in cone” overlying coal bed, - C { 
445, Fibrous carbonate of lime in thin layers with Bryan’s fork of 
Ostrea congesta attached, Cretaceous} Little Blue 
x river, K. T. 
do, 
do. 
Near Fort Lea- 
venworth. 
formation No. 3, . 
