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# Silas L. Loomis, Normal Arithmetic, 1859

The following excerpt is from the book Normal Arithmetic: a Text-Book, Theoretical and Practical, in Six Parts by Silas L.Loomis, published in 1859.

The portion quoted here concerns the "Chuquet" number-names.

These number-names have long since been supplanted by the Conway-Wechsler system, see full list of individual "zillions".

This book was referenced by W. D. Henkle in Names of the Periods in Numeration, 1860.

SECTION II.

NUMERATION.

16. NUMERATION is the art of reading numbers expressed by any method of notation.

17. Arabic Numeration is the art of reading numbers expressed by figures. This may be done by the French Method or by the English Method.

&Ua7; 1. French Method.

18. 18 By this method the first three orders constitute a period called a period of units.

2. Every three succeeding orders constitutes a new period.

3. The orders in every period are the same viz units tens and hundreds.

4. The names of the periods commence with units and proceed to the left as follows: —

TABLE. Units. Thousands. | Decillions. | Vigintillions. M -illions. | Un -decillions. | Un -vigintillion. B -illions. | Duo -decillions. | Duo -vigintillion, &c. Tr -illions. | Tri -decillions. | Tri -gintillion, &c. Quadr -illions. | Quatuor-decillions. | Quatuor-gintillion, &c. Quint -illions. | Quin -decillions. | Quin -gintillion, &c. Sext -illions. | Sex -decillions. | Sex -gintillion, &c. Sept -illions. | Septem -decillions. | Septem -gintillion, &c. Oct -illions. | Octo -decillions. | Octo -gintillion, &c. Non -illions. | Novem -decillions. | Novem -gintillion, &c.    FRENCH NUMERATION TABLE. Quadrillions. Trillions. Billions. Millions. Thousands. Units. 7 6 8 , 4 6 5 , 4 7 3 , 5 2 9 , 8 2 0 , 5 4 2 .

19. A number is written by writing the figures of each period as they are expressed by the language supplying the places of all periods and orders not named with ciphers.

20. A number is read by expressing the units of each period by itself together with the name of the period commencing at the left hand and reading each period as if alone.

EXAMPLES.

25 Read 45.    67.    921.    6072.

26 Read 4021.    87601.    427.    3001.

27 Read 3006.    20041.    821.    56876.

&Ua7; 1. English Method.

21. By this method the first six orders constitute a period, called units.

2. Every six succeeding orders constitute a new period.

3. The orders in every period are the same, viz. units, tens, hundreds, thousands, tens of thousands, and hundreds of thousands.

4. The names of the periods are the same as in the French Method, except thousands.

5. Numbers are written and read by the same rule as in the French Method.

ENGLISH NUMERATION TABLE. Trillions. Billions. Millions. 7 6 8 4 6 5, 4 7 3 5 2 9, 8 2 0 5 4 2, 6 7 4 3 6 8.

This method is but little used.

Source

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