...be directly dependent on solar heat. Again, over considerable areas in the South t lie surface days are various shades of yellow, which would not be expected...red color of adjacent fields is due to temperature. Moreover, the dehydration of ferric oxide, as stated by Crosby, takes place at a certain temperature...

...be directly dependent .on solar heat. Again, over considerable areas in the South t lie surface days are various shades of yellow, which would not be expected...red color of adjacent fields is due to temperature. Moreover, the dehydration of ferric oxide, as stated by Crosby, takes place at a certain temperature...

...directly dependent on solar heat. Again, over considerable areas in the South the surface c'aysare various shades of yellow, which would not be expected if the red color of adjacent fields is duo to temperature. Moreover, the dehydration of ferric- oxide, as stated by Crosby, takes place at...

...here an easy and sufficient explanation of the point in Mr. Russell's criticism to the effect that i; over considerable areas in the South the surface clays...the clay before it has time to change its hue. Mr. Russel has pointed out very clearly that the simple existence of the 'Geological Survey of Alabama,...

...the red color extends renders it evident that it cannot be directly dependent on solar heat. Again, over considerable areas in the South the surface clays...red color of adjacent fields is due to temperature. During the last six years I have gradually come to attach less weight than at first to the difference...

...the red color extends renders it evident that it cannot be directly dependent on solar heat. Again, over considerable areas in the South the surface clays...red color of adjacent fields is due to temperature. During the last six years I have gradually come to attach less weight than at first to the difference...