The wreck of such a vast number of trees would cause a great but gradual alteration in the surface of the ground. The masses of fallen timber, blocking up the streamlets and obstructing drainage, would create a more or less complete stagnation of water upon the land; the bark, branches, and leaves undergoing a process of decay would form the deepest layers of the peat; rank herbage and aquatic plants springing up and dying in endless succession, would form annual accumulations of matter, which in course of time would also be assimilated into peat, and in this manner the moss overlaying the original clayey surface and burying the ancient forest, would grow step by step to its present dimensions. Again, each layer of peat, as they were successively formed, would press upon those beneath, so that the weight of its own increase would give firmness and solidity to the substance of the moss. Thus we see that the whole secret of the creation or formation of the moss is simply a process of growth, decay, and accumulation of certain vegetable products annually repeated. The huge moss of Pilling and Rawcliffe owes its existence to similar phenomena. The large mounds, or star-hills as they are called, which undulate the coast line from Lytham to South-Shore, are composed simply and purely of sand, covered over with a coarse species of herb, bearing the name of star-grass. Similar eminences at one time occupied the whole of the marine border of the Fylde, but in many places the encroaching tide has not only annihilated the hills themselves, but even usurped their sites. The town of Fleetwood is erected on a foundation of sand, and several extensive mounds of that nature exist in its vicinity. Below this light superficial substance, in some places very deep and thrown into its elevated forms by the long-continued action of the wind, is a subsoil resembling that found in other parts of the Fylde, and consisting of a clayey loam and alluvial matter. The diminutive size of those trees growing near the coast is due both to the openness and bleakness of the site, and the deleterious effects of the saline particles contained in the air; whilst the peculiar leaning from the water of their branches, and in many instances their trunks, is caused by the mechanical action or pressure of the strong winds and sea breezes prevailing from the west during three-fourths of the year.