The encyclopædia britannica; a dictionary of arts, sciences, literature and general information . Pic. 4. ^Water Dropwort, Oenanthe crocala, with thickened root fibres, about half nat. , Flower;2and3,Side and front view of fruit; enlarged,(fools parsley, ). Angelica (), Peuccdanum (hcgs fennel,parsnip, ), Heracleum (hogwced), Daucus (carrot). Pelroseltnumsativum is common parsley i,). 576 UMBER—UMBRIA UMBER, a brown mineral pigment consisting of hydrated ironand manganese oxides. The finely-powdered mineral is knownas raw umber; when calcined the beauty of the colour incr
The encyclopædia britannica; a dictionary of arts, sciences, literature and general information . Pic. 4. ^Water Dropwort, Oenanthe crocala, with thickened root fibres, about half nat. , Flower;2and3,Side and front view of fruit; enlarged,(fools parsley, ). Angelica (), Peuccdanum (hcgs fennel,parsnip, ), Heracleum (hogwced), Daucus (carrot). Pelroseltnumsativum is common parsley i,). 576 UMBER—UMBRIA UMBER, a brown mineral pigment consisting of hydrated ironand manganese oxides. The finely-powdered mineral is knownas raw umber; when calcined the beauty of the colour increasesand the pigment is known as burnt umber. It was probably firstobtained from Umbria in Italy, but it occurs in many localities,notably in Cyprus (.Turkey umber); large quantities of Englishumber are mined in Devonshire and Cornwall. (See Pigments.)UMBRA (Lat. for shade or shadow), in astronomy, the com-pletely dark portion of the shadow of a heavenly body, filhngthe space within which the sun is entirely hidden. The bodybeing supposed spherical, the umbra is a cone circumscribingboth th
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectencyclo, bookyear1910
