The posts at the sides stood six feet out of the ground, and were stationed about three feet apart. The centre-posts, to support the ridge-pole, were nine feet high, and made from the trunks of well-grown trees, some six inches in diameter. This certainly was a good day's work under the circumstances; at any rate, we were quite unanimous in considering it so; and towards twilight we went down to the beach for our evening bath, in an exceedingly complacent and self-satisfied state of mind, Max enlarging upon the pleasures of industry, and professing to be in the present enjoyment of those feelings-- "Which follow arduous duty well performed." Instead of repairing to our usual bathing-place, we proceeded along the beach to the north-west, until we reached the clump of trees at the edge of the water, already mentioned as being visible from Castle-hill. As we approached the spot, we found that what had appeared at a distance to be but a single group of trees, was, in fact, a small grove extending along the shore, and fringing a little cove of nearly elliptical form, which at this point set into the land. The narrow, shelving beach, rivalled the whiteness of a fresh snow-drift. The trees were mostly cocoa-palms; indeed, scarcely any others could flourish in such a spot; and there were no shrubs or undergrowth of any kind. The cove was perhaps a hundred paces long, and half as wide in the widest part; contracting to less than fifty feet where it communicated with the lagoon. The water was clear, the bottom smooth and regularly formed, and the greatest depth was only eight or ten feet. Max, after viewing the cove with the eye of a connoisseur, pronounced it a noble spot for bathing purposes, and fully equal to the basin on the reef in every respect, except in depth and facilities for diving. The impression of his morning's adventure, however, was still fresh, and he hinted at the possibility that some shark of elegant tastes, and possessing an eye for the beautiful, might be in the habit of frequenting the cove. Arthur volunteered to keep watch at the narrow entrance, while the rest of us were bathing, in order to give timely notice of the approach of the dreaded enemy; but on walking out to the edge of the lagoon we found that this precaution would be unnecessary. A bar, consisting of a coral patch, very near the surface, stretched across the mouth of the cove, rendering it almost impossible for a shark to enter. Johnny named the spot, "The Mermaid's Cove," but this possessive designation was merely complimentary, for so far were we from renouncing the cove in favour of the mermaids, that from the day on which we discovered it, it became one of our favourite and regular resorts. CHAPTER TWENTY FIVE. THE CABIN BY THE LAKE. A DEMOCRAT IN THE WOODS--ECHO-VALE AND LAKE LAICOMO--THE "WILD FRENCHMAN" DISCOVERED AT LAST.