volcanic, [32].
Ross Barrier, [282].
Rudolph, E., cited, [92].
Rudski, M. P., cited, [19].
Russell, I. C., cited, [126], [147], [148], [175], [178], [222], [293], [294], [296], [381], [384], [414], [424], [425].
St. Anthony Falls, recession of, [327], [354].
St. David’s gorge, near Niagara, [352], [359], [360], [363].
St. Goars, on Rhine, [169].
Saint Martin, cited, [436].
St. Paul’s rocks, a dissected volcano, [141].