While the mountain pictographs of the Homann map rely on an outline in combination with shade-lines on the southeastern slopes (implying high-oblique, northwest illumination), the mountain forms of the Dunn map are rendered by hachures
(slope lines) on multiple sides.
numerals, and hachures
(shading to indicate mountains or other
It is indicated on maps by hachures
, shading, or more accurately, by contour lines.
The rain of hachures
is the cinematographic screen, the projection behind which the city is perceived" (Zischler).
It gives no indication of elevation by contours or spot heights, while hachures
are used only to show extreme situations such as the steep drop below Pope's Hill at the northern end of Monash Valley.
I anticipated commentary on the mixture of point, line and area symbols, on the selection of colours and hachures
that mimic perceptions, on the evolution of choropleths and other thematic techniques, and even on the origins of the idea of making interpretive statements about collective social behaviour in mapped form.
1915, in a version with hachures
held in the Dickson offices of the ACT Planning and Land Authority.