...which must gradually decline toward the margin of the great synclinal axis. This process the author observes appears to furnish a satisfactory explanation...we inquire whether the cause is adequate to produce these vast and repeated flexures, presented by the Alleghanies. Mr. Billings in a recent paper in the...

...two sides of the Appalachian anticlinals, where the dips on one side are uniformly steeper than oh the other, p. 71. An important question here arises,...whether the cause is adequate to produce the vast aud repeated flexures presented by the Alleghanies. Mr. Billings in a recent paper in the Canadian...

...author observes, appears to furnish a satisfactory explanation of the difference of slope observed on the two sides of the Appalachian anticlinals, where...Alleghanies. Mr. Billings, in a recent paper in the Canadian Naturalist (Jan., 1860), has endeavored to show that the foldings thus produced must be insignificant...

...author observes, appears to furnish a satisfactory explanation of the difference of slope observed on the two sides of the Appalachian anticlinals, where...flexures presented by the Alleghanies. Mr. Billings, in u recent paper in the Canadian Naturalist (Jan., 1860), has endeavored to show that the foldings thus...

...author observes, appears to furnish a satisfactory explanation of the difference of slope observed on the two sides of the Appalachian anticlinals, where...admitting with Lyell and Hall that parallel foldings may bo the result of the subsidence which accompanied the deposition of the Appalachian sediments, we inquire...

...author observes, appears to furnish a satisfactory explanation of the difference of slope observed on the two sides of the Appalachian anticlinals, where...uniformly steeper than on the other, (p. 71.) An important qnestion here arises, which is this : while admitting with Lyell and Hall that parallel foldings may...

...which roust gradually decline toward the margin of the great synclinal axis. This process the author observes appears to furnish a satisfactory explanation...we inquire whether the cause is adequate to produce these vast and repeated flexures, presented by the Alleghanies. Mr. Billings in a recent paper in the...