[66]. Volume cx.
[67]. ‘Zeitschrift für allgemeine Erdkunde,’ No. 84, Juni, 1860.
[68]. ‘The Polar World,’ p. 52.
[69]. ‘Urgeschichte Deutschlands.’
[70]. The carat is equal to 3¼ grains Troy weight.
[71]. In the Brazilian diamond trade, the oitava (17½ carats) is considered as the unity of weight. It is subdivided into 4 quartas or 32 vintems; the vintem is equal to 218⁄100 grains. Stones of half a vintem still pass as good ware (fazenda ainda boa), when well-shaped and colourless. Middling ware (fazenda mediana) consists of from 64 to 100 stones to the oitava, while all below that weight is sold as refuse.
Works by the same Author.
THE SEA AND ITS LIVING WONDERS. With several hundred Wood Engravings; and an entirely New Series of Illustrations in Chromoxylography, representing the most Interesting Objects described in the Work, from Original Drawings by Henry Noel Humphreys. Third English Copyright Edition. 8vo. price 21s.