| 31. | The Delaware River is served by various range lights.
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| 32. | The Parris Island Range Lights were lit in 1881.
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| 33. | In 1899, the rear range light was discontinued and replaced by two front range lights.
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| 34. | The Haig Point range lights were lit in 1873.
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| 35. | The Bloody Point Range Lights were lit on 1883.
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| 36. | Therefore the range lights never marked a specific channel.
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| 37. | The second range light is a conical brick tower originally tall with a base diameter of.
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| 38. | And there are free-range light systems, as well.
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| 39. | The Front Range Light was a tall, wooden tower with square cross section and four legs.
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| 40. | Range lights are often illuminated day and night.
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