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Page from Abraham Lincoln's Sum Book

are used in it, instead of arithmetic. Many curious and obsolete rules are given, among them, "The Golden Rule," "Rule of Falsehood," "The Redeeming of Pawnes of Geams," "The Backer Rule of Thirds." Here is a simple problem under the latter:

"I did lend my friend 3/4 of a Porteguise 7 months upon promise that he should do as much for me again, and when I should borrow of him, he could lend me but 5/12 of a Porteguese, now I demand how long time I must keep his money in just Recompence of my loan, accounting 13 months in the year.”

Rhyme is used in this book, in dialogues between the master and scholar. Copies of Cocker's Arithmetick are said to be very rare in England, but I have seen several in America. An edition was published in Philadelphia in 1779. The frontispiece of English and American editions shows the picture of the mathematician surrounded by a wreath of laurel with the droll apostrophe :

Ingenious Cocker! Now to Rest thou 'rt Gone

Noe Art can Show thee fully but thine Own

Thy rare Arithmetick alone can show

What vast sums of Thanks wee for Thy Labour owe.”

"Ingenious Cocker," as one would say "Most noble Shakespeare!" It is hard indeed to idealize or write poetical tributes to one by the name of Cocker.

It gives us a sense of pleasant familiarity with any one to know that he is "well acquaint" with one of our intimate friends, so I feel much drawn to ingenious Cocker by knowing that he was well known of Sam Pepys. He was a writing master, and did some mighty fine engraving for Pepys, who calls him ingenuous, not ingenious. It is rather a facer to learn from the notes in the Diary that Cocker had nothing whatever to do with his Arithmetic, which was a forgery by John Hawkins.

The age that would rhyme a grammar would rhyme an arithmetic, and Record's example was followed and enlarged upon. Thomas Hylles published one in 1620, The Arte of Vulgar Arithmiteke, written in dialogue, with the rules and theorems in verse. This is an example of his

poesy:

"THE PARTITION OF A SHILLING INTO HIS ALIQUOt Partes.
"A farthing first finds forty-eight
A Halfpeny hopes for twentiefoure
Three farthings seeks out 16 streight
A peny puls a dozen lower

Dicke dandiprat drewe 8 out deade
Twopence took 6 and went his way
Tom trip a goe with 4 is fled
But Goodman grote on 3 doth stay
A testerne only 2 doth take

Moe parts a Shilling cannot make."

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The Clock has two hands; a long one and a
short one. The short hand is the hour hand,
and the long one is the minute hand.

The short or hour hand moves very slowly,
and the long or minute hand goes all round
the Clock face while the hour hand goes from
one figure to the next one.

Seven

Two and two added together make.

VII.

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7

Five and two together make

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Eight
VIII.

Nine

Ten

Seven and one together make

IX.

8

9

X. 10

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Eleven
XI.

11

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Twelve
XII.
12

Twenty is a score, and five score

Eattledore, "Lessons in Numbers'

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