An Englishman cannot understand an American’s instinctive desire to know about things; we do not understand his lack of curiosity in that direction.  Both of us forget what I think must be the underlying reasons—­that we are a race which, until comparatively recently, lived wide distances apart in sparsely settled lands, and were dependent on the passing stranger for news of the rest of the world, where he belongs to a people who all these centuries have been packed together in their little island like oats in a bin.  London itself is so crowded that the noses of most of the lower classes turn up—­there is not room for them to point straight ahead without causing a great and bitter confusion of noses; but whether it points upward or outward or downward the owner of the nose pretty generally refrains from ramming it into other folks’ business.  If he and all his fellows did not do this; if they had not learned to keep their voices down and to muffle unnecessary noises; if they had not built tight covers of reserve about themselves, as the oyster builds a shell to protect his tender tissues from irritation—­they would long ago have become a race of nervous wrecks instead of being what they are, the most stolid beings alive.

In London even royalty is mercifully vouchsafed a reasonable amount of privacy from the intrusion of the gimlet eye and the chisel nose.  Royalty may ride in Rotten Row of a morning, promenade on the Mall at noon, and shop in the Regent Street shops in the afternoon, and at all times go unguarded and unbothered—­I had almost said unnoticed.  It may be that long and constant familiarity with the institution of royalty has bred indifference in the London mind to the physical presence of dukes and princes and things; but I am inclined to think a good share of it should be attributed to the inborn and ingrown British faculty for letting other folks be.

One morning as I was walking at random through the aristocratic district, of which St. James is the solar plexus and Park Lane the spinal cord, I came to a big mansion where foot-guards stood sentry at the wall gates.  This house was further distinguished from its neighbors by the presence of a policeman pacing alongside it, and a newspaper photographer setting up his tripod and camera in the road, and a small knot of passers-by lingering on the opposite side of the way, as though waiting for somebody to come along or something to happen.  I waited too.  In a minute a handsome old man and a well-set-up young man turned the corner afoot.  The younger man was leading a beautiful stag hound.  The photographer touched his hat and said something, and the younger man smiling a good-natured smile, obligingly posed in the street for a picture.  At this precise moment a dirigible balloon came careening over the chimneypots on a cross-London air jaunt; and at the sight of it the little crowd left the young man and the photographer and set off at a run to follow, as