The foreign-fruit trade has its head-quarters in the city. The pedestrian who walks down Fish Street Hill would assuredly never surmise that at certain seasons a regular fruit exhibition is kept up within those dull brick houses, before which the tall column lifts its head. All the world knows the Messrs. Keeling and Hunt, whose effigies seem to stand, in the public eye, upon a vast pyramid of pine-apples. This firm hold sales of various kinds of fruit in their auction-rooms in Monument Yard. On these occasions the long apartments make a show, before which, for quantity at least, that of Chiswick pales. Pine-apples by thousands, melons, forbidden fruit, and mangoes, fill the room from end to end; so famous indeed is the display, that there are lithographic engravings of it, in which the salesmen are seen walking about as perplexed, apparently by the luscious luxuriance around them, as Adam might have been in his own happy garden. The pine-apple market is of modern date. The first cargo was brought over about twenty years ago, and since that time the traffic has rapidly increased, and at the present moment 300,000 pines come yearly into the port of London, of which nine-tenths are consigned to Messrs. Keeling and Hunt, the original importers. They are principally from the Bahamas, in the West Indies, where they grow almost spontaneously; but of late years they have been more carefully cultivated, and grafts of our best hothouse pines have been taken out to improve their quality. There is a fleet of clippers appropriated to the carriage across the sea of this single fruit. The melons come from Spain, Portugal, and Holland. Spain is known to abound in melons, for Murillo's beggar-boys are perpetually eating them; but we believe it will be news to most Englishmen that the land of dykes supplies London with fragrant cargoes of an almost tropical fruit. The largest foreign-fruit trade, however, by far, is that in oranges. We shall perhaps astonish our readers when we tell them that upwards of 60,000,000 are imported for the use of London alone, accompanied by not less than 15,000,000 lemons. Any time between December and May the orange clippers from the Azores and Lisbon may be seen unloading their cargoes in the neighbourhood of the great stores in Pudding and Botolph Lanes. There are 240 of these fast-sailing vessels engaged in the entire trade, and of this fleet seventy at least are employed in supplying the windows of the fruiterers and the apple-stalls of London. All these fruits, together with nuts and walnuts, apples, plums, pears, and some peaches, &c., are disposed of weekly at the auction sales in Monument Yard to the general dealers, the majority of whom are located in Duke's Place, close at hand, and are mostly Jews. Indeed we are informed that many of them are the identical boys grown up to manhood that used some twenty-five years ago to sell oranges about the streets, and whose old place has gradually been taken by the Irish.