By nine o’clock the town is in the full flow of business. The streets running down to the water, and Montgomery street which fronts the Bay, are crowded with people, all in hurried motion. The variety of characters and costumes is remarkable. Our own countrymen seem to lose their local peculiarities in such a crowd, and it is by chance epithets rather than by manner, that the New Yorker is distinguished from the Kentuckian, the Carolinian from the Down-Easter, the Virginian from the Texan. The German and Frenchman are more easily recognized. Peruvians and Chilians go by in their brown ponchos, and the sober Chinese, cool and impassive in the midst of excitement, look out of the oblique corners of their long eyes at the bustle, but are never tempted to venture from their own line of business. The eastern side of the plaza, in front of the Parker House and a canvas hell called the Eldorado, are the general rendezvous of business and amusement--combining ’change, park, club-room and promenade all in one. There, everybody not constantly employed in one spot, may be seen at some time of the day. The character of the groups scattered along the plaza is oftentimes very interesting. In one place are three or four speculators bargaining for lots, buying and selling “fifty varas square” in towns, some of which are canvas and some only paper; in another, a company of miners, brown as leather, and rugged in features as in dress; in a third, perhaps, three or four naval officers speculating on the next cruise, or a knot of genteel gamblers, talking over the last night’s operations. The day advances. The mist which after sunrise hung low and heavy for an hour or two, has risen above the hills, and there will be two hours of pleasant sunshine before the wind sets in from the sea. The crowd in the streets is now wholly alive. Men dart hither and thither, as if possessed with a never-resting spirit. You speak to an acquaintance--a merchant, perhaps. He utters a few hurried words of greeting, while his eyes send keen glances on all sides of you; suddenly he catches sight of somebody in the crowd; he is off, and in the next five minutes has bought up half a cargo, sold a town lot at treble the sum he gave, and taken a share in some new and imposing speculation. The very air is pregnant with the magnetism of bold, spirited, unwearied action, and he who but ventures into the outer circle of the whirlpool, is spinning, ere he has time for thought, in its dizzy vortex.