me into view, with the tall Nelson monument,
in Trafalgar Square, to mark it, Rollo at once knew where he was. So he
told the policeman who had him in charge there that he could go the rest
of the way alone; and so, thanking him for his kindness and bidding him
good by, he ran gayly home.

Thus the policemen are, in many ways, the stranger's friends. They are
to be found every where; and they are always ready to render any service
which the passenger may require of them. Each one is furnished with a
baton, which is his badge of office; a rattle, with which he calls other
policemen to his aid when he requires them; a lantern for the night; and
an oilskin cape for rainy weather. In winter, too, they have greatcoats,
made in a peculiar fashion.

* * * * *

But to return to the Horse Guards. After Mr. George had finished his
conversation with the policeman about the Horse Guards, he said to Rollo
that he was going over to the other side of the street, in order to get
a better view of the building. So he led the way, and Rollo followed
him. When they reached the opposite sidewalk, Mr. George took his
station on the margin of it, and began to survey the edifice on the
opposite side of the street with great apparent interest.

"I don't see any thing very remarkable about it," said Rollo.

"It is the head quarters of the British army," said Mr. George.

"What elegant black horses those troopers are upon!" said Rollo.

"It is the centre of a power," said Mr. George, talking, apparently, to
himself, "that is felt in every quarter of the world."

"I should like to have such a uniform as that," said Rollo, "and to be
mounted on such a horse; but then, I should rather ride about the city
than to stand still all the time in one of those sentry boxes."

"About the _town_, you mean," said Mr. George.

Rollo here observed that there was an open gateway in front of the Horse
Guards, and beyond it an arched passage, leading directly through the
centre of the building to some place in the rear of it. There were a
great many people coming and going through this passage way; so many, in
fact, as to make it evident that it was a public thoroughfare. Rollo
asked his uncle George where that passage way led to.

"It leads to the rear of the Horse Guards," said Mr. George, "where
there is a great parade ground, and through the parade ground to Hyde
Park. I have studied it out on the map."

"Let us go th