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UMBRA (Lat. for shade or shadow), in astronomy, the completely dark portion of the shadow of a heavenly body, filling the space within which the sun is entirely hidden. The body being supposed spherical, the umbra is a cone circumscribing both the sun and the ...

... lable for both purposes. Primarily the umbrella (ombrella, Ital. dim. from Lat. umbra, shade) was a sunshade alone — its original home having been in hot, brilliant climates. In Eastern countries from the earliest times the umbrella was one of the insignia of ...

UMBER, a brown mineral pigment consisting of hydrated iron and manganese oxides. The finely-powdered mineral is known as raw umber; when calcined the beauty of the colour increases and the pigment is known as burnt umber. It was probably first obtained from Um

... th America and classical Europe is found Ihe concept ion that Ihe soul — triad, umbra — is somehow identical with ihe shadow of a man. More familiar lo Ihe Anglo-Saxon race is Ihe connexion belween Ihe soul and Ihe breath; this identification is found both in ...

... lled terlii adjacentis, in a passage which is the first appearance, or rather adumbration, of the verb of being as a copula. In the form secundi adjacentis we only get oppositions, such as the following: — man is — man is not not-man is — not-man is not In the ...

... ites (Miscellonta, Turin Acid. t. iv.); and in the same year expanded Euler's adumbrated method of the variation of parameters into a highly effective engine of pcrturbational research. It was especially adapted to the tracing out of " secular inequalities," o ...