...utterly devoid of vegetation, and almost identical in appearance with the 'gumbo hills,' of the Bad Lauds bordering the Little Missouri in North Dakota. Both...of the Little Colorado River are strewn with chips aud pieces which have tumbled down during the wearing away of the hill-sides. Logs 30 to 50 centimeters...

...hills and the naked clayey flats between them abound in alkali vents—miniature craterlets—where the alkali effloresces, crusting over the surface...hill-sides. Logs 30 to 50 centimeters (roughly, a foot or a foot and a half) in diameter and 9 to 12 meters (30 or 40 feet) in length are still common,...

...Little Missouri iu North Dakota. Both the hills and the naked clayey flats between them abound iii alkali vents — miniature craterlets — where the...hill-sides. Logs 30 to 50 centimeters (roughly, a foot or a foot and a half) in diameter and 9 to 12 meters (30 or 40 feet) iu length are still common,...

...clayey flats between them abound in alkali vents—miniature cratcrlets—where the alkali eflloresces, crusting over the surface in patches which resemble...hills are capped with fossil wood, and many of the Hats and lower levels east of the Little Colorado River are strewn with chips and pieces which have...