The coral is generally reddish, but the colouring ranges from light yellow to chocolate-brown.
These glazes were not monochromatic: they showed differences of tint, and sometimes marked varieties of color; as when chocolate-brown passed into amber, or black was relieved by streaks and clouds of grey and dead-leaf red.
in length; and the beans are about the size of an ordinary horse bean but much thicker, with a deep chocolate-brown colour.
The variegated plumage of the Snipe is subject to no inconsiderable variation, especially in the extent of dark markings on the belly, flanks, and axillaries, while examples are occasionally seen in which no trace of white, and hardly any of buff or grey, is visible, the place of these tints being taken by several shades of chocolate-brown.
The opium is usually of much firmer and smoother consistence than that of Turkey, of a chocolate-brown colour and cheesy appearance, the pieces bearing evidence of having been beaten into a uniform mass previously to being made into lumps, probably with the addition of Sarcocoll, as it is always harder when dry than Turkey opium.
The Mestizos, who form so large a fraction of the population of modern Mexico, numbering several millions, afford a convenient test in this respect, inasmuch as their intermediate complexion separates them from both their ancestral races, the Spaniard, and the chocolate-brown indigenous Aztec or other Mexican.
The complete conversion of stannous into stannic chloride may be effected by a great many reagents - for instance, by chlorine (bromine, iodine) readily; by mercuric chloride in the heat, with precipitation of calomel or metallic mercury; by ferric chloride in the heat, with formation of ferrous chloride; by arsenious chloride in strongly hydrochloric solutions, with precipitation of chocolate-brown metallic arsenic. All these reactions are available as tests for "stannosum" or the respective agents.
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