| 21. | There are currently about 200 recognized species of opalines in 5 genera : " Opalina"
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| 22. | Successful culturing of opalines in artificial media for periods of 1 month or more has been reported.
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| 23. | All opaline glass is hand-blown and has a rough or polished pontil on the bottom.
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| 24. | Another surviving example of Gray's work is an etched opaline panel showing a fern gully.
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| 25. | Opaline, 85 Avenue A, at Sixth Street, East Village, ( 212 ) 475-5050.
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| 26. | Siliceous sinter is a deposit of opaline or amorphous silica which appears as incrustations near hot springs and geysers.
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| 27. | The authors of that study considered the opalines to be a family ( Opalinidae ) within the order Slopalinida.
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| 28. | Some evidence suggests that the life cycle transitions of opalines may be governed by the hormonal cycles of the host.
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| 29. | These are white instead of the usual grey, and this allows Opalines to be identified at a very early age.
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| 30. | The first two pairings produced six Opalines, all hens, and the third several Opalines, both cocks and hens.
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