Possible Clues:

• Jacklight
• What one learnt about the North threw little light on it
• Light aquatic bird following short path
• Leading light left before our sailors
• Enclosed lamp
• Light tail of gull, an aquatic bird
• At last the bird is a little light
• Torch's kin
• Illumination provided 26 across?
• Illumination of following point (ditto included)