. Bulletin of the Geological Society of America. Geology. CHARACTER PROFILES 127 Such elemental lines in a landscape are the true profiles or their pro- jections in perspective of the protruding portions of the lithosphere, and they may be referred to as character profiles. These profiles are the lines that would be selected by an artist in preparing an outline sketch of the landscape in pen and ink. Several of them may naturally be present together in greater or less perfection in the same Figure 3.—Some Lines of Profile each cJiaracteristic of a special Type of Landscape a, Domin
. Bulletin of the Geological Society of America. Geology. CHARACTER PROFILES 127 Such elemental lines in a landscape are the true profiles or their pro- jections in perspective of the protruding portions of the lithosphere, and they may be referred to as character profiles. These profiles are the lines that would be selected by an artist in preparing an outline sketch of the landscape in pen and ink. Several of them may naturally be present together in greater or less perfection in the same Figure 3.—Some Lines of Profile each cJiaracteristic of a special Type of Landscape a, Dominant profile in a youthful erosional stage; h, ttie Hogarthian beauty line which recurs in mature landscapes ; c, character profile of maturely eroded and partially submerged district; 0, recurring element in profile of uplifted coast region ; e, profile which recurs in table mountains ; f, characteristic profile of fold mountains; g, profile line of volcanic cone ; h, profile produced by mountain glaciation ; i, the characteristic profile from continental glaciation. SPACE UNITS IN PROFILES The physiographer who has given special study to the profiles of many districts will further have noted a regularity in the recurrence of the ele- mentary lines or a further subdivision of them. The larger notches in horizon lines are most of them waterways, at least during certain seasons, so that any regularity in their space relations will indicate a more or less uniform interval separating the lines in the drainage network. Such subequal spacing of streams has been often noted and by many observers. The late Professor Shaler believed that the mat of vegetation which covers the ground in humid regions largely interferes with a perfect ex- pression of river spacing.^ The importance of this factor was brought vividly home to the writer during a cruise along the west coast of Norway in the summer of 1910. The course of the steamer among the islands and skerries of the Norwegian coast offer
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