"We can swim!" protested Merle.

"A little, close by the shore, I daresay, but that's nothing if you're plunged into deep water. I can't take the responsibility of letting you go. Never mind! We'll make up a party one day and take a motor-boat with a proper experienced boatman. Young Talland can join us then if he likes."

Mavis and Merle were disappointed almost to the point of tears. They had duly admired The Kittiwake in the harbour, and they simply longed to go on board. It seemed so particularly tempting when they had such a cordial invitation, and so aggravating to be obliged to decline.

"Cousin Nora's very nervous," urged Mavis in extenuation. "She'd be afraid of our being drowned if we went on a duck-pond."

Bevis passed over the slur on his seamanship.

"It's all right!" he answered quietly, but there was a certain set obstinate look about his mouth which the girls knew well, and which meant that he intended if possible to get his own way, though he said nothing more at the time.

[Illustration: HE KEPT THEM DAWDLING]

It was perhaps as well for everybody's peace of mind that he should not take Clive boating, for the boy was venturesome and mischievous, and rather out of hand except when his father was by. He often made the girls' hair almost stand on end by his pranks at the verge of the cliffs, and was sometimes the cause of considerable bad language among the sailors when he interfered with their nets or tar-pots down on the quay. It was a relief to Mavis and Merle when Mr. Tremayne took him out in the side-car, and they knew that for some hours at least they need not be responsible for his behaviour. They were both fond of botany, and were enthusiastically making collections of wild flowers to press for their holiday task. Bevis was a good ally in this respect, and would often call in at Burswood Farm with some uncommon specimen which he thought they had not yet found for themselves. He had come on this errand one morning, and was helping Mavis to screw up her pressing boards, when Mrs. Tremayne happened to mention the scarcity of shells in the neighbourhood of Chagmouth.

"I've hardly found any!" she remarked. "And I'm so annoyed, because it happens to be my particular hobby. I'm collecting them. I suppose the coast is too rocky and they get broken. They're always very local things."

"There's just one place I know where you might find some," said Bevis. "It's a particular patch of sand near Gurgan Point. I saw some beauties there a while ago. I'll show you where it is with pleasure if you like."