The stippled areas represent the ore shoots and the white areas the barren portions of the lode.
On the map of Germany (1:Ioo,000) a slope of 50° is shown in solid black while stippled hachures are used for gentle slopes up to 100.
To i in., in two editions, both printed in colour, the one with hills stippled in brown, the other coloured on the " layer system " as a strata-relief map; a map of the United Kingdom on a scale of 4 m.
To i in., also in two editions, the one in outline, showing five classes of roads and parish boundaries, the other in colours, with stippled hills; a map on a scale of io m.
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