| 31. | This variant of the bugle fell out of use with the invention of the valved cornet.
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| 32. | As with conventional pulsejets, there are two main types of designs : valved and valveless.
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| 33. | He usually has a modern, valved trumpet of some kind on or near his person.
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| 34. | It splts into two valved segments, with a single grey round seed within each segment.
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| 35. | The fruit contains a 5-valved capsule which measures up to 5 mm in diameter.
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| 36. | The tiny, inconspicuous fruit is a leathery two-valved capsule about long and white.
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| 37. | The fruit is a spirally-twisted two-valved capsule releasing minute seeds when mature.
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| 38. | The national rivalry between French and German makers continued into the era of the valved horn.
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| 39. | The first piston-valved musical instruments were developed just after the start of the 19th century.
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| 40. | These works were written for natural horn, the valved instrument not being invented until about 1810.
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