POTASH SALTS AND OTHER SALINES IN THE GREAT BASIN REGION. 
57 
Feet. 
Rapid alternations of sand and brownish clay 264-275 
Tough clay 275-285 
Sand with coarse and fine gravel, including pebbles £ inch in diameter 
(artesian water) 285-290 
Very fine brownish sand 290-305 
Tough sticky clay 305-336 
Rapid alternations of clay and quicksand, the latter containing a little 
fine gravel (artesian water) 336-340 
Light-colored clay 340-350 
Quicksand, probably with occasional thin layers of clay 350-375 
Tough gray clay 375-390 
Quicksand (small astesian flow) 390-391 
Tough gray clay 391-418 
Quicksand (small artesian flow) 418-419 
Brown clay 419-429 
Sand (small artesian flow) 429-430 
Hard brown clay with occasional very thin sand streaks 430-445 
Gray clay 445-459 
Very soft yellowish clay 459-461 
Quicksand (artesian water) 461-462 
White sticky clay 462-463 
Blue-green clay 463-470 
Very fine quicksand (artesian water) 470-471 
Lead-colored clay i 471-478 
Very fine sand 478-479 
Blue-green clay 479-480 
White clay 480-490 
Blue-green clay with occasional thin sand streaks 490-493 
Gray clay . 493-500 
Blue-green clay, with occasional thin streaks of coarse sand 500-504 
White clay, fragments showing jointed structure 504-511 
Tough, blue green clay 511-519 
Quicksand (artesian water smelling of sulphuretted hydrogen) 519-520 
Gray clay 520-523 
Gray clay with occasional thin strata of sand (artesian waters in all sands. 
Waters smell of sulphuretted hydrogen) 523-529 
Gray clay 529-533 
Very fine quicksand (artesian water smelling of sulphuretted hydrogen) . 533-534 
Blue-green clay 534-539 
Quicksand with some rather coarse gravel (strong artesian flow. Water 
carries no sulphuretted hydrogen) 539-541 
Sticky yellowish clay 541-549 
Tough white clay 549-554 
Blue-green clay 554-556 
Very tough white clay 556-560 
Quicksand.. 1 560-561 
Blue-green clay 561-583 
White clay 583-586 
Quicksand (small artesian flow) 586-587 
Clay. 587-596 
Alternations of clav and black sand (small artesian flows in sands, espe- 
cially at 605 feet) 596-609 
Tough white clay.... 609-620 
Gray clay 620-637 
Sand 637-638 
Very sticky clay 638-655 
Light-colored greenish clay 655-657 
Very tough white clay 657-676 
Quicksand (small artesian flow) 676-677 
Rapid alternations of clay and sand (very little water) 677-680 
White clay 680-691 
Rapid alternations of clay and sand 691-700 
Brownish clay 700-719 
Sand (very small artesian flow) 719-720 
Brownish clay 720-738 
Rapid alternations of quicksand and clay, the former carrying a little 
coarse gravel (small artesian flows) 738-746 
