The contour lines showing the heights above sea-level are the directions along which species spread to form zones.
The student paid special attention to the curves of the contour lines when reproducing the teacher's artwork.
The west central portion has considerable irregularities of contour, and the north-west is distinctively hilly.
A record of this series of advances marked upon a flat map of the original country would give a series of concentric contour-lines narrowing towards the mountaintops, which they would at last completely surround.
The dresses worn by his figures are not clothes, but drapery through which the forms and movements of the body are strongly felt, and their contour shows a grand breadth of line which strikes the eye at once.