retains as a record of the loan, and the borrower takes the book away.
The book-card, with all others representing the books issued on the
same day, he places in a tray behind a card bearing the date of
the day of issue. All the book-cards representing books issued on a
certain day are arranged in the order of their call-numbers.

[Illustration: Tray for book-cards.]

Under this system the borrower can tell, by looking at his card, on
what date the book he has was taken from the library. If he wishes
to renew it without taking it back to the library, he can do so by a
letter stating that he took on a certain day a book bearing a certain
number, and wishes it renewed.

The librarian can tell, from the book-cards, what books are in
circulation, and how many of each class were lent on a certain day.

[Illustration: No. 1. Postal notice. (Reduced.)

City Library Association
Springfield, Mass. Feb. 14, 1899.

The book noted below is now in the library and will be
reserved for you until 9 P.M., Feb. 15.

_Please present this notice and your library card._ A charge
of two cents is made for this notice.

JOHN COTTON DANA, _Librarian_.