ree Parts. Part I. Plants. Part II. Animals.
Part III. Air, Water, Heat, Light, &c. By WORTHINGTON HOOKER, M.D.
Illustrated. The Three Parts complete in One Volume, Small 4to, Half
Leather, $1.12; or, separately, in Cloth, Part I., 45 cents; Part II.,
48 cents; Part III., 48 cents.

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A beautiful and useful work. It presents a general survey of the kingdom
of nature in a manner adapted to attract the attention of the child, and
at the same time to furnish him with accurate and important scientific
information. While the work is well suited as a class-book for schools,
its fresh and simple style cannot fail to render it a great favorite for
family reading.

The Three Parts of this book can be had in separate volumes by those who
desire it. This will be advisable when the book is to be used in
teaching quite young children, especially in schools.

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Published by HARPER & BROTHERS, New York.

_Sent by mail, postage prepaid, to any part of the United States, on
receipt of the price._

[Illustration]

THE WOMBAT.

A Mandarin owned a wombat
That grew so exceedingly fat
That, when it would laugh
'Twould most break in half,
And tickle the soul of the cat.

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=A Dog that could Cipher.=--The well-known English astronomer Dr.
Huggins had a mastiff that bore the name of Kepler. This dog possessed
many rare gifts, and amongst these was one which he was always ready to
exercise for the entertainment of visitors. At the close of luncheon or
dinner Kepler used to march into the room, and set himself down at his
master's feet. Dr. Huggins then asked him a series of arithmetical
questions, which the dog invariably solved without a mistake. Square
roots were extracted off-hand with the utmost readiness and promptness.
If asked what was the square root of nine, Kepler replied by three
barks; or, if the question were the square root of sixteen, by four.
Then various questions followed, in which much more complicated
processes were involved--such, for instance, as "Add seven to eight,
divide the sum by three, and multiply by two." To such a question as
that Kepler gave more consideration, and sometimes hesitated in making
up his mind as to where his barks ought finally to stop. Still, in the
end, his decision was always right. But how did he do it? may be asked.
The solution is easily