| 1. | The popularity of Opaline glass began during the reign of Napoleon.
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| 2. | Creamino ), Whitefaced Cinnamon, Whitefaced Opaline ( Whitefaced Pearl ).
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| 3. | Cocks which are heterozygous for Opaline are identical to the corresponding Normal.
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| 4. | Many pieces of opaline glass are decorated with gilding.
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| 5. | This technique will aid tremendously in future studies of all aspects of opaline biology.
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| 6. | Real opaline glass was produced only in France.
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| 7. | In the 20th century Italy produced a similar glass and called it opaline veritable.
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| 8. | The Opaline mutation is locus of its gene being carried on the X chromosome.
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| 9. | Opaline silica and iron sulphate minerals form in acidic ( low pH ) solutions.
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| 10. | The presence of opaline silica points toward a hydrothermal environment that could support life.
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