ooks.

Each of these stacks will hold eight hundred thousand books, and
although they may be consulted by any one, very few are ever lost, for
only members of Congress and about thirty other officials can take
books out of the library.

"As there is a constant call for books of reference from the Capitol
when legislators often want a volume for instant use, an underground
tunnel has been made between the two buildings. This contains a cable
carrier upon which books can be sent back and forth," explained Mr.
Dauntrey. "But haven't you seen enough of the library now?"

"There is Mr. Ludlow!" exclaimed Dorothy, "and I think he is calling
us."

"Yes, let us go over to him," added Mrs. Calvert. "Come."

"Ah, here you all are," said Mr. Ludlow. "I called to you just now
because there is one painting I would like to have you all see before
you go upstairs to the restaurant."

"Is it here?" questioned Dorothy.

"No. You follow me and I will bring you to it in just a few seconds,"
answered Mr. Ludlow.

"Here we are. I want you all to follow this series of pictures."

"It is called the evolution of the book," added Mrs. Calvert.

The series begins with a picture representing the means that the
prehistoric men took to commemorate an event singly--the creation of
the cairn, nothing more nor less than the piling up of stones. Then
comes a picture illustrating oral tradition--an Arab story writer of
the desert. The third represents an Egyptian carving hyroglyphics on a
tomb. These are the forerunners and the next is picture writing,
represented by an American Indian painting some tribal story or event.
In lieu of paper he uses a skin. The fifth is shown by a figure of a
monk sitting by the embrasure of his cell, laboriously decorating the
pages of some sacred book of the Middle Ages. And finally, the initial
attainment of modern methods is shown by a scene in the shop of
Guttenburg, where the original printer is seen examining a proof
sheet, while an employe looks over his shoulder, and another assistant
has the lever of a crudely constructed press in hand.

They all thought this series of pictures a beautiful one, and very
interesting.

Dorothy commented, "If they had not discovered how to print and make
books, I wonder if we would have had a library like this one here,
filled with stones all covered with hyroglyphics?"

"I hardly think so," answered Mr. Ludlow, "for we could never get so
much stone in a building. B