"The greater portion of them cannot; ducks and that class, for instance. Divers can remain some time; but the birds that remain the longest under water are the semi-aquatic, whose feet are only half-webbed. I have watched the common English water-hen for many minutes walking along at the bottom of a stream, apparently as much in its element as if on shore, pecking and feeding as it walked." "You say that aquatic birds cannot remain long at sea,--where do they go to?" "They resort to the uninhabited islands over the globe, rocks that always remain above water, and the unfrequented shores of Africa and elsewhere; there they congregate to breed and bring up their young. I have seen twenty or thirty acres of land completely covered with these birds or their nests, wedged together as close as they could sit. Every year they resort to the same spot, which has probably been their domicile for centuries,--I might say since the creation. They make no nests, but merely scrape so as to form a shallow hole to deposit their eggs. The consequence of their always resorting to the same spot is that, from the voidings of the birds and the remains of fish brought to feed the young, a deposit is made over the whole surface, a fraction of an inch every year, which by degrees increases until it is sometimes twenty or thirty feet deep, if not more, and the lower portion becomes almost as hard as rock. The deposit is termed guano, and has, from time immemorial, been used by the Peruvians and Chilians as manure for the land; it is very powerful, as it contains most of the essential salts, such as ammonia, phosphates, etcetera, which are required for agriculture. Within these last few years samples have been brought to England, and as the quantities must be inexhaustible, when they are sought for and found, no doubt it may one day become a valuable article of our carrying trade. Here comes Mr Fairburn; I hope he intends to continue his notices of the Cape settlement." "They have interested me much, I must confess; he appears well acquainted with the colony." "He has had the advantage of a long residence, and during that time an insight into all the public documents: this you may be certain of, that he knows more than he will tell." As soon as Mr Fairburn joined them, Alexander requested him to continue his narrative, which he did as follows. "You must not suppose, Mr Wilmot, that because the English had now possession of the colony, everything went right; governors who are appointed to the control of a colony require to be there some time before they can see with their own eyes; they must, from their want of information, fall into the hands of some interested party or another, who will sway their councils. Thus it was at the Cape.