CONTENTS

[Instantaneous Addition.]

[How to Add Two Columns at Once.]

[Multiplication.]

[Accurate Interest.]

[Equation of Payments.]

[The Lightning Calculator’s Addition.]

[Bank Discount.]

[How to Make Change.]

[Proof of Multiplication in Ten Seconds.]

[The Canadian Interest Rule.]

[Table of Transposed Numbers.]

[Short Method to Find the Interest of a Given Sum.]

[Interest Computations.]

Multum in Parvo
Library.

Vol. I.

February, 1894.
Published Monthly.

No. 2.

How to Become a
LIGHTNING
CALCULATOR.

Smallest Magazine in the World. Subscription
price, 50 cts. per year. Single copies, 5 cents each.

PUBLISHED BY
A. B. COURTNEY,
671 Tremont Street, Boston.

Entered at Post-Office as second-class matter.